Written

I may not have make myself clear yesterday, and the rule of the game that had changed may skip your eyes.

The very point is, with the development of words and a written language, men do not have to live long to pass an experience. They could simply write it down - their wisdom become immortal.

Turning the table around, it also means that the younger generation do not need to learn all the knowledge from old people (alas, their teacher !) - provided that the students could read. In fact, once put down on paper black-and-white, information from different sources could be compared and analyzed; knowledge becomes way more accurate (rather than, as in an ancient tribe, the master dictated his knowledge; there was no means to challenge him).

Now, you see, we are stuck with a long lifespan (as compared to other similar species) because the evolution of our genome is slower than that of technology. Age has very little advantage - if the young ones are willing to read and learn by reading.

And, therefore, children, if you learn largely by lecture, you are no different from the ancient Neanderthals - go and read up on your own in case you wish to excel all those senile STOOL.

PS. I was enlightened by my friend TW: STOOL stands for space and time occupying and obstructing lesions.