That was quite enlightening, to recognize that there are plenty of things women have in common with other women tho, as you said, education may also try to help women and men see what they have in common too.
Oh--I just remembered one of the tiny details I remember from Mars/Venus, where a woman may ask a guy, "Can you do such and such", and he says "Yes", so then she gets upset that he didn't do it. But when he said "Yes", he literally meant that he was able to--"can", not that he "would". So the recommended phrasing for women to use was, "Will you do such and such?" as that seems to increase likelihood of man doing it when he says yes:):) Since then, I constantly use that phrasing no matter who I'm talking to, even if I'm asking my dog, "Will you stop barking?":)
I like to think of these books as baseline knowledge. Like you said, life is too busy to enact every little piece of relationship advice we've read. But when problems crop up, I like the idea of going to my shelf, opening the books, flipping through some underlined parts, finding some relevant bits, then saying to my partner (who is hopefully receptive to this stuff), "do you think this might be relevant or help us right now and if so, wanna take a closer look together?" But...I realize this is probably overly idealistic because working through problems is actually messier than that:) But it's a starting point!