[Poker monkey]

If Doyle's read is right, and Jamie has a flush (which he does), his hand is 53% vs Jamie's range, which is not really a great situation to be in when you're playing massively deep. If you take the 5-high flushes out, Doyle's probably a dog to Jamie's range (maybe someone with better pokerstove skills can compute this).

So yeah, it's a great fold.

Board: Ks 4s Jd As
Dead:

equity win tie pots won pots tied
Hand 0: 53.328% 53.33% 00.00% 657 0.00 { Ts8s }
Hand 1: 46.672% 46.67% 00.00% 575 0.00 { AsKs, AsQs, AsJs, AsTs, As9s, As8s, As7s, As6s, As5s, As4s, As3s, As2s, KsQs, KsJs, KsTs, Ks9s, Ks8s, Ks7s, Ks6s, Ks5s, Ks4s, Ks3s, Ks2s, QsJs, QsTs, Qs9s, Qs8s, Qs7s, Qs6s, Qs5s, Qs4s, Qs3s, Qs2s, JsTs, Js9s, Js8s, Js7s, Js6s, Js5s, Js4s, Js3s, Js2s, Ts9s, Ts8s, Ts7s, Ts6s, Ts5s, Ts4s, Ts3s, Ts2s, 9s8s, 9s7s, 9s6s, 9s5s, 9s4s, 9s3s, 9s2s, 8s7s, 8s6s, 8s5s, 8s4s, 8s3s, 8s2s, 7s6s, 7s5s, 7s4s, 7s3s, 7s2s, 6s5s, 6s4s, 6s3s, 6s2s, 5s4s, 5s3s, 5s2s, 4s3s, 4s2s, 3s2s }