I always thought how could you prove times exists if memory didn’t? For example if you put an apple on a table and moved it to a new spot on the table, if you didn’t have memory you would think the apple was always in that new position. Or if you looked in a mirror and stuck your tongue out, would you detect the movement of your tongue or would you think it was alway existed in one certain position with each new position of that movement?
I know someone who has pretty good long-term memory, but because of brain damage has no short-term memory whatsoever. He doesn’t know what was just said five minutes ago or, as in the example you cited, he has no idea of the applewas moved 6 inches over just a minute or two ago.