The trick to playing good blitz is to learn how to evaluate a position only a few moves deep.
That rings true to me.
And you use simple things to choose... for example "this 3 move variation lets me control the d file with Rd1 at the end, so I choose it only for that reason."
I think another difference is that in classical you're usually (or should be) calculating more than one line... and then you choose the line that lead to the better outcome.
In blitz it's more about these little triggers like controlling the d file, improving a bishop, hurting their pawn structure, etc. And of course tactics. I threaten to win a pawn, I threaten to win a piece, etc. Most of the time in blitz you're not comparing two different lines, you're choosing something that sets off a sufficient number of triggers.
That's how I'd describe it anyway.
That strikes me as a wise a thoughtful description of what works in blitz.
oh that's Kinda cool thanks
Looks as though you understand now. It's a nifty feature that chessdotcom implemented a couple of years ago.