In her scholarly, nuanced and clinically relevant paper^{Reference Hilton1} Claire Hilton, the Royal College of Psychiatrists’ Historian in Residence, highlights our professional continuity with our predecessors and the vital need to study and learn from their history unencumbered by arrogance or prejudice towards them. Among case examples, she discusses psychiatrist Henry Cotton's systematic removal of thousands of Americans’ internal organs for ‘treatment’ of mental illness and psychiatrists’ participation in the Nazi ‘euthanasia’ programme to systematically exterminate 80 000 Germans with severe neuropsychiatric disabilities through gas asphyxiation. Consistent with her institutional position, Hilton presses repeatedly her legitimate anxiety lest psychiatrists be unfairly criticised or blamed.

Although fairness is undoubtedly a foundational value in both history and psychiatry, arguably the key driver in historical enquiry should be discovery rather than praise or blame, necessary though these are too. In his ‘Copernican revolution in historical perception’ Walter Benjamin (1892–1940) proposed that ‘Formerly it was thought that a fixed point had been found in “what had been”, and one saw the present engaged in tentatively concentrating the forces of knowledge on this ground. Now this relation is to be overturned, and what has been is to become the dialectical reversal- the flash of awakened consciousness [ … ] The facts become something that just now first happened to us, first struck us’^{Reference Benjamin, Eiland and McLaughlin2} (K1,2). Jetztzeit: the ‘now-time’ of recognisability!

Although theories of sepsis and the spread of tonsillectomy may help contextualise Cotton's behaviour and it was lauded by some contemporary medical authorities, including British, we agree it still stands condemned as hubristic and inhumane. Regardless, the key message today is not the blame we may or may not apportion. It is the insight that, especially when general medical discoveries make them seem plausible, unwarranted clinical optimism combined with self-confidence and interventional fervour make psychiatrists vulnerable to tragically flawed actions, including toxic therapeutics. This extends beyond psychiatry, of course. The actions of Nazi psychiatrists were evil and those of opioid analgesia prescribers in recent decades not. Nevertheless, in the context of US deregulation and Sackler family-owned Purdue Pharma's criminality,³ harmful prescribing by physicians has caused much higher numbers of preventable deaths.^{Reference Humphreys, Shover, Andrews, Bohnert, Brandeau and Caulkins4} To patients, doctors’ actions matter more than their motivations, although both are important.

‘History decays into images, not into stories’ noted Benjamin^{Reference Benjamin, Eiland and McLaughlin2} (N11,4). ‘It is not that what is past casts light on what is present, or what is present on what is past; rather image is that wherein what has been comes together in a flash with the now in the form of a constellation’^{Reference Benjamin, Eiland and McLaughlin2} (N3.1). We must not let fear, empathy or cognitive dissonance obscure the view.^{Reference Lepping and Poole5,Reference Poitras6} If oftentimes the constellation flashes most luminously in the dark, due diligence demands we go there. Raymond Sackler KBE (1920–2017) was a Life Fellow of the American Psychiatric Association and today the Institute of Mental Health at University College London is led by its Sackler Chair, inaugurated in 2018.^{Reference Robinson7} Meanwhile the Tate Gallery in London ‘has become the latest institution to quietly drop the Sackler name from its walls in the race to cut ties with the disgraced family’.^{Reference Chow8}

To conclude, in researching and reflecting on the history of psychiatry we will do best if we attend to Walter Benjamin's ‘Definitions of basic historical concepts: Catastrophe – to have missed the opportunity. Critical moment – the status quo threatens to be preserved’^{Reference Benjamin, Eiland and McLaughlin2} (N10,2).