...So people experienced a feeling of a presence behind them... when something behind them touched them? That would seem to be pretty robust evidence of a pres

...So people experienced a feeling of a presence behind them... when something behind them touched them? That would seem to be pretty robust evidence of a presence behind someone, really. (the bit with the sensorimotor lag is necessary for this, of course; it's pretty obvious that the brain accounts differently for sensory input that it can directly correlate with its own actions and that it can't. But I bet that you'd also get a feeling of presence if the robot was touching someone on an autonomous program, which would be just as completely unsurprising.)