It kind of depends. If you consider the achievement in the context of the time period it was done vs achievement of all time you'll get different answers. Sem

It kind of depends. If you consider the achievement in the context of the time period it was done vs achievement of all time you'll get different answers. Semiconductors are a marvelous feat of engineering but in the time from when they were first developed until now the ability to share communication has been unparalleled allowing this to happen. In the other hand the concrete dome on the Pantheon is quite a feat as well considering their relatively basic understanding of the principals of forces and simplistic methods of collaborative sharing.