Science has shown that merging late moves traffic faster. You are helping the guy 1 minute back get through faster by being the dickhead who merges late.
I still won't do it : )
Getting a shot that would otherwise be wasted is filling the empty space. And it benefits everyone. That is something I would do.
Like BLeP said, I just wouldn't brag about it. (BTW, the reason clinics do not simply have on call waiting lists is because they don't work.)
The zipper merge is your friend. Go with the science. It's not about merging late. It's filling the empty space. And it benefits everyone.
On the zipper merge: it causes road rage and other problems that a civil engineering study could not model. I *think.
Drivers frequently can't see if there are open spots to zipper merge into until it is too late. And then they try to force their way into a spot that doesn't exist because the cars are packed too close. Frequently the source of both accidents and road rage incidents.
By definition, there is always a spot to zipper merge. It's always right behind the guy in the lane next to you, and the guy who is behind that guy gets behind you. It's so dead simple. We teach this kind of thing in kindergarten when we learn about "taking turns".