According to Guns, Germs, and Steel which is more important: the ability to invent, or the ability to borrow inventions and find new uses?

According to Diamond, the ability to borrow and adapt is
much more important than the ability to invent.  The reason for this is that it is much
more possible to borrow many kinds of technologies from many different places than it is
to have to invent all of those technologies
yourself.

Diamond argues that most innovations were spread
by borrowing.  This was one reason why Eurasia had such an advantage over other parts of
the world.  Eurasia was home to many different cultures, many of which could trade
relatively easily with one another.  Because of this, all the different cultures'
inventions came to be available to all cultures.  This meant that each culture in
Eurasia had access to many more technologies than it would have been able to invent on
its own.