It's still more likely to be reabsorbed by other part of the body than the other's retinas. Wonder if anyone will dare to do the math.

>Wonder if anyone will dare to do the math.

Warning! Madness this way lies.

I'm thinking back to the movie Real Genius during one of the montage scenes where they're cramming for finals in a common area when one student just stands up from his material and starts screaming in madness before fleeing. Everyone else, just behaves as if this is normal as someone takes the now vacant place at the table.

That guy screaming in madness? That's me after just thinking of doing the math without even grabbing a pencil.

No, this will not help. Thermodynamic law forbids this.

Otherwise one can create a machine concentrating all the thermal radiation of one black object at temperature T1, onto another perfectly white object also at T1 with a tiny black hole, heat up the second and then violate the second law of thermodynamics.

Keyword for further Googling: etendue