Cross post. It's not ludicrous. It's a piece of evidence.
It's a piece of crap evidence. I studied archaeology at uni. I know all about the difficulties of ageing skeletons and sexing skeletons. And that carbon dating comes with a margin of error - and when the bones haven't even been carbon dated - then yes, saying 'this is a skeleton from 1483 and not 1485' is unsubstantiated and ludicrous.
Besides, you only have to look at children today to see the massive height differences you can have for children of the same age - 'about 12' could easily be 10 or 14 in reality.
At the time of being found - the bones were broken and fragmented and mixed up with animal bones. Two skulls were found but they actually had no way of knowing how many bodies they were looking at, or how long many of the bones would be. They were not in a good condition to age - even if ageing child skeletons were easy - which it isn't!
And those skeletons may predate or post date Richard's reign by decades - centuries even.
These are not the only skeletons of children that have been found in the tower - plenty of others have been discovered - and attributed to being the princes.
The reason these particular skeletons became the official princes in the tower is because the workmen who found them said they had scraps of velvet wrapped around their bones (so royal) and they were buried at the foot of a staircase - Like Thomas Moore said they were.
But Thomas Moore also said that they were laid out naked (so where's the velvet coming from?). And that on hearing they were put at the foot of a staircase Richard had them moved to some place more appropriate (so ...they shouldn't still be there in 1647 when they were found). So the bodies actually contradict the historical source that reported them.
(Not that Thomas Moore is a good source - but the legend that these are the missing prince's bones comes from them meeting only some of the criteria that Moore placed down i.e not a very good claim at all.)
The last time those bones were looked at was 1933. The scientists were working from the assumption that they were the princes and were primarily looking for evidence of suffocation. They agreed they were 'about the right ages' - but were predisposed to find that - but they had no proof of when they died (everyone is 12 at some point!) and they didn't attempt to sex the bones (although that is difficult with pre pubertal bodies). The bones were fragmented and in poor condition - pretty difficult to tell anything significant about them - not that they were looking.
Like I said - it is a ludicrous claim that those bodies date from Richard's reign and not Henry's (or anybodies pre 1647 and post the introduction of velvet for that matter! and even the velvet claim - that was what one anonymous eyewitness saw. They could have been mistaken. Once the velvet is removed those bones could come from anytime in history - they could even predate the tower itself. A skeleton has been found there, that went through all 'it's a prince' drama only to be discovered to be iron age. And then there was the body of the 'prince' found locked in a high tower room that turned out actually to be an ape that had escaped from the menagerie... )
I stand by the word 'ludicrous'.