This is very true, although guys can also urinate whilst standing up.

Heavy lifting does form the basis of advanced civilisations.

http://forums.equipped.org/ubbthreads.php?ubb=showflat&Number=222187

I can't imagine that there were any girls in charge whilst the boys were chiseling out this obelisk.

http://en.wikipedia.org/wiki/Unfinished_obelisk

Yes I know that the boys ended up breaking this one but as they say you can't make an omelet without breaking eggs.

The reality is that in 6000 years of recorded civilisation there are only a very few notable female names in that historical record.