I don't remember many telephone numbers anymore. I don't think it is a result of not being able to remember them (although others may question that) but I simply don't have to remember the numbers. For the numbers I call most frequently, I have to remember the speed dials -- what character I assigned to which person. Otherwise, the number is right in my “Contacts”. I tell myself that these conveniences free my brain matter for consideration of more worthwhile matters. I hope that’s true.
We rely on many technologies to save time and free us for other endeavors. But when do we depend too much? I think I now know. I read a story a few weeks ago about a woman who drove 900 miles out of her way by blindly following her GPS. The trip was in Belgium. Originally a 90 mile trip, it was on the second day of driving (sleeping on the side of the road and two gas fill-ups) that she realized something was wrong when the language on the road signs kept changing. (The story said that it was not clear whether the GPS was faulty or the destination incorrectly entered.)
Rely on technology but not too much.