In regards to wishful thinking 

"Due to Leuchter's ignorance of the large disparity between the amounts of cyanide necessary to kill humans and lice, instead of disproving the homicidal use of gas chambers, the small amounts of cyanide which Leuchter detected actually tended to confirm it.[8]"

It doesn't explain how it tended to confirm it, also this whole sentence is presented as fact like everything else in this biased article.
Thus I'm assuming it's wishful thinking and only here to discredit Leutcher. 62.255.104.106