My last performance for the 'Music Man' was October 15. Here it is only a month later and I find I have already begun to 'lose' a few lines (I had sizable role). Oddly enough, I still can recite the entire selection I did from Neal Simon's 'The Good Doctor' that I did in high school over 24 years ago. It would require considerable effort for me to remember what I had for dinner last night and I do not think I could tell you at all what I had for dinner 1 week ago. Memory sure is a strange thing and takes on so many different forms (remembering faces, names, events, music, conversations, dates, etc.). I once knew a guy who had a photographic mind (eiditic memory). You could have him look at a page of text for 30 seconds and ask him 10 minutes later what the fifth word on the 17th line was and he'd tell you correctly 100% of the time.
So, do YOU have a good memory, and if so for what sort of thing? If your memory sucks (in any particular area) how do you compensate?
edit: and for Mendelman's benefit, 'Neal Simon' was the lesser well known playwright who penned several Brawdway Shows