With regards to scientific consensus regarding medical evidence in the context of criminal findings things can get very murky.
An example is the consensus around metaphyseal fractures. After a few high profile cases, guidance came in that these fractures alone should not be considered enough to "prove" abuse in babies.
Shaken baby syndrome is another grey area in some respects.
When you look at the scenario of premature babies in a clinical setting with inherent fragilities and conditions already present, assessing causes of "unexpected" collapses and deaths becomes quite complex. My sticking point in this case is that initial post mortem findings did not flag up those causes despite them being fairly obvious apparently in hindsight on re-examination. Did the physicians airing their suspicions never do so close enough to the deaths to suggest to the pathologists that something may be amiss?
I'm still quite confused by many aspects of this case.
I've been poking around on reddit and someone suggested that up to 4000 cases might be re-examined amounting to pretty much every patient Lucy Letby came into contact with. That's a mind boggling number.
I think if I'd been on a jury I'd have been hard pressed to be able to ascertain guilt or innocence frankly.
I'm also having difficulty finding any psychological or psychiatric reports referenced or used in court. If anyone can point me at them I'd be very grateful, as some idea of why she did it would be helpful.