Hmm.

Well the Russians lacked imagination and thought that all that there was in space was nothing.
NASA saw the possibility that there could be whole other worlds with water. And that there was no gravity in space and so they would have to write upside down. And they wanted to have professional looking notes. Not cheap high schooler notes written with a pencil. And a terrorist could come in and easily erase all Russian space records.
Lots of reasons..


If sandwich bread is square, why is most lunch meat round?