1. "I'll just put her in the carriage for a nap. She'll sleep for about three hours, and I can use that time to get some work done."
Wrong. You can't. If you even consider getting something useful done while your child naps, she will wake up at least every five minutes to require comforting.
2. "I'll sit down at the computer to quickly check my e-mail/pay my bills/do something vital even though I'm carrying the baby. She won't mind."
Wrong again. She will mind, because for some reason your child hates every single location in the house where you would be able to do something useful with just one hand. My daughter hates the office for some unknown reason. Bad vibes, I guess.
3. "Thank god she's recently been sleeping peacefully at night. Therefore, I can get some well-earned sleep after this 14 hour workday."
Guess what? Wrong. If I didn't know my daughter doesn't do it on purpose, I'd swear she somehow senses when her parents are really spent, for it seems to cause her to either A) be really difficult to get to sleep or B) go to sleep so easily and so early that she wakes up at about 5 am.
4. "There's no hurry to get the fresh diaper on. She already did her stuff. How much more could there be?"
Sigh. I presume I don't need to elaborate on that.