what makes tires puncture resistant add weight..

so the super light go fast tire better be easy to change and put a new tube in , quickly .

Wiki says :
Platonic idealism usually refers to Plato's theory of forms or doctrine of ideas. Some commentators hold Plato argued that truth is an abstraction. In other words, we are urged to believe that Plato's theory of ideas is an abstraction, divorced from the so-called external world, of modern European philosophy, despite the fact Plato taught that ideas are ultimately real, and different from non-ideal things--indeed, he argued for a distinction between the ideal and non-ideal realm.