Ya know, after thousands of years of trying it out in all kinds of environments, it seems as though almost every culture on Earth settles on "Guess", with maybe a touch of "Ask" in the more overbearing ones. A common modification to "Guess" is "Offer", where the mere mention of a possible opportunity to help out is treated as creating almost a positive obligation to notice the need and make a spontaneous offer.

From where I sit, that's pretty strong evidence that "Guess" or maybe "Offer" is more suited to collective human nature. There's a pretty heavy burden of proof on any "rationalist" who wants to change it.

It's also not so obvious that you can effectively change conventions like these by just starting in and asking others to change. If you tried your "developing trust" tactic with me, I'd probably play along to avoid conflict on one occasion, and avoid YOU after that.