I'm kinda like the monkey at the zoo, always play'n w/my meat.
But most of the time it does just take one flip.
I also did a "test" between sear'n first or last. I need to do it again w/my grill instead of a CI pan on a hot plate.
No real moisture difference, or taste differences. Although, oddly enough, the test subjects(wife and kids) liked the seared last burger, cept the wife, she didn't know for sure(iirc) and I think she might have chosen the sear first one. doesn't matter, wasn't a big deal to them. But they are not "foodies" like some people I know.
That was good reading. thanks for the article.