You're playing NLwith 1 million dollar stacks and $1/2 blinds. You are the SB and it folds to you. You raise $999,999 with 72o. Your opponent moves all in. You call.

It's clear that even though you have given yourself pot odds to call the raise you've made a bad play.
I think, yeah, it's better to illustrate things in this manner. I don't think you NEED a load of difficult maths to point something out like this. But it's nice to introduce it I suppose.

As for table image and inducing -EV on later streets, well, that's why I stick to the bare assuming maths I just ain't that good yet! Nice point though!

You could simply rephrase that as your bet is -ev, but your call is +ev (0ev in this case).

So yes, it is a bad idea to take a -ev decision to set up a future +ev (0ev) decision.

If you bet has an ev of -$2, but after you bet and are faced with a raise and the call has an ev of +$1, then you are still -$1 EV on the river.
Yep, nice way of putting it

I think a fair bit of maths has been introduced in this thread so i'd hope it can be useful (though I wonder, since most posters are FTR regs, but maybe...)

I'm going to try to explain the maths I use more when I post in the future.