It's an interesting and highly debatable topic. Some say that certain types of intelligence have improved dramatically whereas others haven't. One interesting theory (by Geoffrey Miller) is that human intelligence wasn't propelled by natural selection alone. Instead, it was also driven by sexual selection. It seems a bit weird to think that our ancestors found intelligence to be an attractive quality. It's not something you see often in today's society (or at least what's depicted in the media).
[quote name='Hitman2000' timestamp='1352797208' post='595316170']
I read a similar piece (cant remember where haha) which argued we maybe losing our memory functions because of technology, who needs to remember facts and figures when you have google and Wikipedia at your finger tips. So surely over generations of this, our memory capacity will be reduced, it made sense to me.
That's not true. What you're talking about is similar to Lamarckism. It's the inheritance of a characteristic that is acquired over an organism's lifetime. For example, a giraffe has to stretch its neck to reach leaves on a tall tree. After a lifetime of doing this, its neck grows longer. And when that giraffe gives birth to a calf, it too has a long neck. However, that isn't the case in the real world. An organism cannot pass down a characteristic it acquired in its lifetime. Whatever it passes down is determined by its genetic makeup.
Similarly, the use of technology to remember things will have no effect on future offspring. Whether it improves or diminishes your memory capacity is irrelevant.