1660–1670:
From the New Latin mnemonicus from the
Ancient Greek μνημονικός (mnēmonikós) (of memory) derived from μνήμων (mnḗmōn) (remembering, mindful) & μνᾶσθαι (mnâsthai)
(to remember); the ultimate root was the
primitive Indo-European men (to
think). The meaning "aiding the
memory", a back-formation from mnemonics
dates from 1753, the noun meaning "mnemonic device" is from 1858. The use in computer programming emerged in
the early days of code and was a space-saving (eg del rather than delete)
tool as well. Mnemonical was the original form from the 1660s. One of the charming ironies of mnemonic is it is one of those words so many can't quite remember how to spell. It's thus in a sense "antimnemonic" and a contronym (also as auto-antonym, antagonym, or enantiodrome) which describes a word with two opposite or contradictory meanings, depending on context. Mnemonic is a noun & adjective, mnemonician, mnemonicalist, mnemotechnist & mnemonicon are nouns, mnemonize & mnemonized are verbs, mnemonical & mnemotechnic are adjectives and mnemonically & mnemotechnically are adverbs; the noun plural is mnemonics.
Sans Forgetica

Sans Forgetica sample text.
Recently
released, Sans Forgetica (which translates as "without forgetting") is a sans-serif font developed by RMIT University in
Melbourne. Back-slanted and with gaps in
the character constructions, it’s designed explicitly to assist readers better
to understand and retain in their memory what they’ve read. Perhaps counter-intuitively for those outside
the field, the shape is intended to reduce legibility, thereby (1) lengthening
the tame taken to read the text and (2) adding complexity to learning and
absorbing what’s been read. Together,
they create what in cognitive psychology and neuroscience is called "desirable difficulty", in this case forcing (RMIT might prefer "nudging") people to concentrate.

The first three paragraphs of Lindsay Lohan's Wikipedia page, rendered in Sans Forgetica. Sans was from the Middle English saunz & sans, from the Old French sans, senz & sens, from the Latin sine (without) conflated with absēns (absent, remote). Forgetica was an opportunistic coining, the construct being forget + -ica. Forget was from the Middle English forgeten, forgiten, foryeten & forȝiten, from the Old English forġietan (to forget) (which was influenced by the Old Norse geta (to get; to guess), from the Proto-West Germanic fragetan (to give up, forget). The -ica suffix was from the Latin -ica, the neuter plural of -icus (belonging to derived from; of or pertaining to; connected with).
From
usually a young age, readers become skilled at scanning text, a process helped
by most publishers seeking to render their works as legible as possible. The theory of desirable difficulty is that omitting
parts of the font requires the reader to pause and process information more
slowly, thus provoking an additional cognitive processing which may enhance both
understanding and retention. While
the application of the science to a font is novel, there’s nothing original about Sans
Forgetica as a piece of typography, it being described as a hybrid of several
existing schools and within the theory, on
the basis of a small-group sample of students, it’s claimed to be a balance
between legibility and difficulty.
According to the documents supplied by the developer, it’s not been
tested as a device for advertisers to draw people to their text, the theory of
that being people scan and dismiss (without retention) the great bulk of the large, static
signage which is a feature of just about every urban environment. With Sans Forgetica, because it can’t as quickly be
scanned, people will tend longer to linger and so more carefully read the whole; a
memorable event itself.
The most
recent revision (DSM-5-TR (2022)) to the American Psychiatric Association's
(APA) Diagnostic and Statistical Manual of Mental Disorders (DSM) followed DSM-5
(2013) in refining the somewhat vague section on amnesia in both the DSM-IV
(1994) & DSM-IV-TR (2000) where appeared the terms “Psychogenic amnesia” &
“dissociative amnesia”, the core element of which was: “one or more episodes of
inability to recall important personal information, usually of a traumatic or
stressful nature, that is too extensive to be explained by ordinary
forgetfulness.” That really reflected
the popular understanding and there was no clear definition of sub-types in the
diagnostic criteria although in the text (not always in criteria) there was
mention of localized, selective or generalized forms. In the fifth edition, the disorder was called
Dissociative Amnesia (psychogenic amnesia seems to have been replaced) and it
was listed in the dissociative disorders section. The definition still includes an “inability to
recall important autobiographical information, usually of a traumatic or
stressful nature, that is inconsistent with ordinary forgetting” so
the popular understanding remains acknowledged but sub-types are now listed:
localized (for specific event(s)), selective (some parts of the event), or
generalized (identity and life history) amnesia. Consistent with the structural revisions
elsewhere in the fifth edition, the exclusion criteria was made more explicit
(ie the memory loss should not be due to substances, medication, a neurological
condition or better accounted for by another mental disorder) although
clinician remain aware of overlap.
Significantly the DSM-5 did clarify that amnesia is retrograde (loss of
pre-existing memories), especially of autobiographical kind and emphasised the
memory loss is “beyond
what is expected from normal forgetting.” Because in such matters, there will be so much
variation between patients, it remains one of those conditions with fuzzy
boundaries and the symptoms presented must be assessed on a case-by-case basis.
Amnesia (memory
loss) is much studied and although associated with the aging process, traumatic
events (brain injury or psychological impacts) and certain neurological conditions,
there have been some celebrated cases of recovery without medical intervention. One celebrated case was that of Rudolf Hess (1894–1987; Nazi Deputy Führer 1933-1941) who in 1941 (on the eve of Germany invading the USSR) flew himself to Scotland in a bizarre and unauthorized attempt to negotiate a peace deal with those in the UK he though would be "reasonable men". His "offer" was rejected and he was locked up (including two weeks in the Tower of London), later to be sent as a defendant before the IMT (International Military Tribunal) in the first Nuremberg Trial
(1945-1946). There, so convincing were his symptoms of amnesia and other mental states the judges requested submissions from defence and prosecution counsel on the
matter of his fitness to stand trial. The
prosecutors assured the bench Hess would be able to both understand and cope
with the proceedings and that an imperfect memory was merely a hindrance to his
defence rather than an insuperable obstacle. This was of course a predictable argument and
the judges acceded to the defence’s request for a thorough medical
investigation although they declined the suggestion Swiss doctors be consulted,
assembling instead a team from medical staff on hand (three Soviet, three American,
three British and one French), all from the nations running the trial. The physicians presented four national papers
which broadly were in agreement: Hess was sane (as legally defined) but was
suffering from hysterical amnesia, induced by his need to escape from uncomfortable
realities, something they found was often typical of “those with Hess’s unstable personality”. All concluded the amnesia was temporary and
would vary in intensity, the US doctors suggesting it may even disappear were
any threat of punishment removed.

Caricature
of Rudolf Hess at the first Nuremberg Trial by New Zealand-born UK cartoonist David Low
(1891-1963).
The author Rebecca West
(1892–1983) covered the trial as a journalist and wrote some vivid thumbnail
sketches, noting of Hess: “Hess was noticeable because he was so plainly mad: so
plainly mad that it seemed shameful that he should be tried. His skin was ashen and he had that odd
faculty, peculiar to lunatics, of falling into strained positions which no
normal person could maintain for more than a few minutes, and staying fixed in
contortion for hours. He had the classless air characteristic of asylum
inmates; evidently his distracted personality had torn up all clues to his
past. He looked as if his mind had no
surface, as if every part of it had been blasted away except the depth where
the nightmares live.” Whether or not Hess was "mad" (as such folk were described in 1946) can be debated but to many at the time, he certainly looked a madman.
Predictably
unconvinced, Hess’s counsel at a hearing on 30 November 1945 told the bench a
defendant could hardly stage an adequate defence if unable to remember names or
incidents vital to his case, adding that on the basis of discussions with his
client, even if he understood the words, Hess was incapable of grasping the significance
of the charges against him. Nor would a
trial in absentia be fair because it would constituent a “grave injustice” were a defendant
not present to give evidence or challenge the testimony of witnesses. He concluded by requesting proceedings
against him should be suspended and resumed only if his condition significantly
improved. To that, the British countered
with a lengthy lecture on the distinctions in English law between amnesia &
insanity and seconded the Soviet view that participation in the trial (and thus
the need to make a defence) might well cure his condition. Essentially, the British argued if he could
follow the proceedings, he was fit to stand trial. The US team noted Hess had at times claimed to
be suffering amnesia while in captivity in England between 1941-1945 and on
other occasions admitted the condition was simulated. In the slang of the English criminal bar: “He had a bit of previous”. The Americans also expressed annoyance at him
having repeatedly refused any of the treatment prescribed by the Allied doctors,
concluding: “He
is in the volunteer class with his amnesia”. The lawyers having finished, the IMT asked Hess
if he wished to speak on the matter. Without
delay, he rose in the dock and walked to the microphone where he addressed the
court in a clear and calm voice, his statement coherent, unambiguous and, most
historians have concluded, clearly premeditated: “Henceforth my memory will again respond to
the outside world. The reasons for
simulating loss of memory were of a tactical nature. Only my ability to concentrate is, in fact,
somewhat reduced. But my capacity to
follow the trial, to defend myself, to put questions to witnesses, or to answer
questions myself is not affected thereby.
I also simulated loss of memory in consultations with my officially appointed
defence counsel. He has therefore represented in good faith.”
He then sat down in what was described as a “stunned courtroom”. It was at that point the trial’s most
sensational moment and after taking a few seconds to digest things, the assembled press
pack in their dozens rushed outside to file the story (the US military newspaper Stars and
Stripes ran the punchy headline “Hess Nuts. Fake Story Fake”). Immediately, the president of the IMT
adjourned the session and the judges went into private session to decide
whether Hess should be tried. From their
subsequent interviews and writings it appears they were not much influenced by
Hess’s unexpected statement but were impressed by the similarity of the conclusions
offered by the doctors, the chief US prosecutor saying such “unanimity of
medical opinion” was, in his experience: “historically unique”. All eight judges agreed Hess was fit to stand
trial and, after being convicted on two counts ((1) conspiracy to wage aggressive
war and (2) waging aggressive war), he was handed a life sentence and would
remain incarcerated until in 1987 he committed suicide after some 46 years
behind bars, the last two decades of which were served as the sole inmate (guarded by dozens of soldiers on rotation from France, the UK, US and USSR) of Berlin’s sprawling Spandau Prison, a huge facility designed to incarcerate hundreds.

Low’s
take on the official German line explaining Hess deserting the German
government as “madness”. This cartoon
does represent what was then the prevailing public perception of the typical appearance expected of those in “lunatic asylums”. Depicted
(left to right) are:
Hermann Göring (1893–1946; leading Nazi 1922-1945, Hitler's designated successor & Reichsmarschall 1940-1945):
Committed suicide by by crushing between his teeth an ampule of a potassium
cyanide (KCN), smuggled into his cell in circumstances never confirmed, shortly
before he was to be hanged after being convicted on all four counts ((1)
Conspiracy to wage aggressive war; (2) Waging aggressive war; (3) War crimes
and (4) Crimes against humanity.
Adolf
Hitler (1889-1945; Führer (leader) and German head of government 1933-1945
& head of state 1934-1945): With his wife Eva (née Braun; 1912–1945)
of a few hours, committed suicide (he by gunshot and KCN, she by KCN alone) with
the tanks of the Red Army only a couple of blocks from the Berlin Führerbunker.
Dr Robert
Ley (1890–1945; head of the Deutsche
Arbeitsfront (German Labour Front) 1933-1945): Before the trial began, he committed suicide by hanging
(by means of suffocation) himself from the toilet-pipe in his cell in Nuremberg, after having for some years made a reasonable attempt to drink himself to death. He died with his underpants stuffed in his
mouth, decades before the phrase "Eat my shorts!" began to circulate in popular culture.
Joachim von
Ribbentrop (1893–1946; Nazi foreign minister 1938-1945): Hanged at Nuremberg
after being convicted on all four counts.
Dr Joseph
Goebbels: With his wife (Magda Goebbels (née Ritschel; 1901-1945), committed suicide
(by gunshot) in the courtyard above the Führerbunker,
shortly after they’d murdered their six young children.
Heinrich
Himmler (1900–1945; Reichsführer SS 1929-1945): Captured by the British while
attempting to escape disguised as a soldier, he committed suicide using an ampule
of KCN concealed in his mouth.
Whether Hess was at any point insane (in the
legal or medical sense) remains debated although, as is often the case, more interesting still is the speculation about just when the instability began. Whether any credence can be attached to the official statement on the matter from the Nazi Party is doubtful but in the view of Reich Chancellery, his madness predated his flight to Scotland in 1941 (one of the strangest incidents of World War II (1939-1945)). What the German press was told to publish was that Hess had become "deluded and deranged", his mental health affected by injuries sustained during World War I (1914-1918) and that he'd fallen under the influence of astrologers. Just to make that sound convincing, the police conducted a crackdown (a well oiled technique in the Nazi state) on soothsayers and fortune-tellers. Dr Joseph Goebbels (1897-1975; Nazi propaganda minister 1933-1945) wasn't consulted before the "madness" explanation was announced and he seems to have been the only senior figure in the regime to grasp the potential implications of revealing to the public that for some time the country's deputy leader had been mad. Others though did make the connection. When Hermann Göring tried to shift the blame to aircraft designer and manufacturer Willy Messerschmitt (1898–1978) because he'd provided Hess a twin-engined Bf 110 Zerstörer (destroyer (heavy fighter)) for his flight, the engineer responded by saying Göring was more culpable because he should have done something about having someone unstable serving as Deputy Führer. Göring could only laugh and told Messerschmitt to go back to building warplanes and, as it turned out, the strange affair was but a "nine day wonder" for not only did the British make no attempt to use Hess's arrival on their soil for propaganda purposes (which astonished Goebbels) but other events would soon dominate the headlines. The only place where the strange flight left a great impression was in the Kremlin where comrade Stalin (1878-1953; Soviet leader 1924-1953) for years mulled over who within the British establishment might have conspired with Hess to allow the UK to withdraw from the conflict, leaving Germany able to invade Russia without having to fight on two fronts. Historians have concluded the reluctance by the British to use for propaganda the arrival of Hess was their concern comrade Stalin might suspect collusion.

Arthur Sinodinos, b 1957;
Liberal Party functionary and minister variously 2007-2019; Australian
ambassador to the US 2019-2023, right ) presenting to Donald Trump (b 1946; US
president 2017-2021 and since 2025, left) his credentials as Australia's ambassador
to the US, the White House, Washington DC, February 2020.
Less dramatic but
perhaps medically even more remarkable than the Hess affair was the recovery from amnesia by Arthur
Sinodinos, a case which deserves to enter the annals of academic psychiatry &
neurology (and debatably, those of the thespians). In Australia, royal commissions are public
investigations, established by but independent of government. Not a court, royal commissions are created to
enquire into matters of public importance and, within their terms of reference,
have broad powers to conduct public & in camera hearings; they can call
witnesses, compelling them (under oath) to provide testimony and they deliver
recommendations to government about what should be done, consequent upon their
findings. These can include
recommendations for legislative or administrative changes and the prosecution
of institutions or individuals and they’re of great interest because they appear
to be the only institution (at least theoretically) able to compel a politician
to tell the truth. Even that power is
limited though because when appearing before royal commissions, politicians
seem especially prone to suffering amnesia, an obviously distressing condition
which compels them frequently to utter phrases like “I can’t remember”, “I don’t
recall”, “not in my recollection”
etc. In the lore of the New South Wales
(NSW) bar, Mr Sinodinous, while in 2014 being questioned by an enquiry, is believed to have set a
record for the frequency with which the condition manifested. Fortunately, the enquiry handed down no
adverse findings against him and almost immediately, his memory appeared
miraculously to recover, enabling the Australian Liberal Party government to appoint
him ambassador to the US in 2019 so there's that. The following transcript is wholly fake news:
Donald Trump: "What did you and Joe Biden talk about?"
Arthur Sinodinous: "I can't remember."
Donald Trump: "Not to worry, he won't remember either."
In the rich slang of the NSW bar, the
condition once known as RCM (Royal Commission Memory) is now also referred to
as “Sinodinos Syndrome”, on the model of “Marcinkus Syndrome” which describes
the medical status of Roman Catholic priests who, being investigated for this,
that or the other, although seemingly fit and healthy, are never able to be
certified quite well enough to be interviewed by police or other authorities. The condition is named after Archbishop Paul
Marcinkus (1922–2006; President of the Institute for the Works of Religion (the
“Vatican Bank’) 1971-1989).