In the case of turkey Neville Chamberlain, all the evidence was there - massive German Forces, the invasion of Czechoslovakia, and sycophantic Chamberlain who called Hitler "Herr Hitler". Churchill had an opposing view.
There is no evidence of an imminent crash, take it from me, I picked the 1987 rout and the GFC and converted shares to cash before they happened. Didn't know I was psychic did you?
There's no evidence of excess, massive sales of new cars, champagne parties, people buying several houses and shares with credit, it's nothing like either 1987 or the GFC.