Well done starting this thread and i hope the responses continue, in truth they should because in this game we are all continuous learners. Re your above we snap because i have negative filters but with the odd exception have always deployed them in a flexible way being willing to bet against them if the positives stack up on balance. But increasingly i find i am reversing this thinking and feeling OK with the outcome which is fewer bets.For me I got a much better handle than before on exclusions/negative factors i.e. even though I like a horse cos of ABC reasons I shouldn't in fact back it cos of other XYZ reasons.
