"as google, we spent two years to research a way of generating sha-1 collisions and made quintillions of computations to generate an example" <- not very convin

"as google, we spent two years to research a way of generating sha-1 collisions and made quintillions of computations to generate an example" <- not very convincing or practical. It's like those japanese animes where the nerdy kid boasts about having computed your every move.