> Would be interesting to know if the effect persists when the viewer tilts their head, not just the viewed. I just had to think of the equivalent of two peopl

> Would be interesting to know if the effect persists when the viewer tilts their head, not just the viewed. I just had to think of the equivalent of two people trying to make way for each other on the street, and stepping to each side at the same time. Two people wanting to put each other at ease in the same instant, both wiggling their heads from one side to the other for a bit, then laughing politely and settling on tilting their heads to different sides from one another.