On the other hand, dams, aqueducts and other kinds of infrastructure will still have to be built, particularly in developing countries where basic human needs have not been met.
I shall expect 200% attention and participation from you all.
If we think of a book we studied months or years ago, we will find it easier to recall perioheral details—the color, the binding, the typeface, the table at the library where we sat while studying it—than the content on which we were concentrating.
All I said, teaching could have a minimal effect on children. All children can learn something, but children without natural ability will be behind those who have it.
Porpoises will save drowning men by pushing them to the surface, or protect them from sharks by surrounding them in defensive formation.