Oh for a nap

Why is it that when you talk to a mom of a baby or toddler and ask her how her day is going, she immediately starts to delve into a calculous equation-like description of her babies continually fluctuating napping and feeding schedule..... " Well she woke up at 5 and then slept for another hour and 46 minutes and then by the time i fell asleep at 6:15 after feeding her of course she woke up again and then she should be going down around 9:34, but you never know, and I might put her down at 9:15, because then she can get a full two hours, well if she will sleep of course, but then she might wake up starving and ... and I need about ONE BAGILLION HOURS OF SLEEP MYSELF!!!!!!
poor thing....
Well I should be saying poor me, because try as I might not to, I find myself spouting these eating and feeding schedules all the time to my friends, who then reply with their child's eating and feeding schedule and then we just pause with a knowing deeper than words, and sigh.......Oh for a nap.....