Because guys don't seem to know hilchos shabbos. Guys!! Get your act together. It's embarassing that after all those hours you have spent learning you still don't know the laws of shi-hiyah and chazara!:-) I am organizing a shiur in hilchos shabbos for all of the male readers of mevakesh lev. I just suspect that nobody will fly in for that. Oh well....
Thank G-d for women and for seminaries! They know the halachos and we can trust 'em. Otherwise we'd be eating cold pizza for the shabbos day meal.