I understand that you are joking and that you are exaggerating to make a point; however, for a supposed professor, you make some pretty illogical and idiotic jokes and/or exaggerations... including the above. 

Personally, i believe jokes and/or exaggerations are much more effective when at least they have some connection to real factors.. doubling zero is NOT one of those factors, doubling zero is an adventure into fantasy abstract meaninglessness.... maybe a similar level to your contributions to this thread, jorge...