Just for fun because H and I disagree (but not with actual poll):
When changing an infant diaper and said infant does a tiny bit of business (pea to dime sized) in new diaper mid-change, do you
A) start over with new diaper
keep on keepin' on with slightly soiled diaper
C) some other option
Re: random poll
TTC #2: BFP 12/17/11, m/c 1/7/12 and D&C 1/12/12
baby blog/cooking blog

If #2, then new diaper (or hopefully you can remove it with a wipe, if not then new diaper)
If #1, just go on, they pretty much seem to pee constantly.
I always start with a new one. I want their bums to be clean for as long as possible, so I would not leave any remnant pee or poo on a diaper and then close it up. My kids both have extremely sensitive skin and redness begins almost immediately after they poo if they aren't changed.
FWIW, my DH tends to determine if they need to be changed by how long it's been since they were changed rather than actually checking if they're wet. It infuriates me. I don't care if it's been 5 minutes, I want a new diaper on them if it's dirty.
TTC #1 Cycle 14 - IUI#1=BFN, IUI#2=BFP | TTC #2 Cycle 8=BFP!!

Gah! My DH seems to determine it based on whether or not J has told him he needs to be changed. WTH? He's two, he's not going to tell us every time he needs changed. The other day J had been up for more than an hour--still in his nighttime diaper--and DH hadn't changed him because "he hadn't said anything." I put J on the changing table and guess what--he'd pooped, AND had leaked onto his onesie a bit. Grrr.
TTC #2: BFP 12/17/11, m/c 1/7/12 and D&C 1/12/12
baby blog/cooking blog

I do not let even a tiny bit of poop be on the diaper; even a drop and they get a new one!
if it's pee, it's OK