With books when I used to read more, very frequently. I’d be going strong until the last 50-100 pages and then set it down and not pick it up again. Then I’d forget wtf was happening and usually just give up. Games are similar too.
I would love to see the moment humans first learned complex speech patterns. Yes it was probably a long process. But to see the first complete sentence uttered would be cool as hell. Even better if I could somehow understand it.