Very simple, by reading nerve impulses and rather than sending them
along at wiring speed using photo-rams to send them along at light
speed!
It is superheroes we are talking about. A lot of agility can be done by
limiting movements not accelerating them, clumsy people are often
considered clumsy because of how their limbs do not seem to coordinate
themselves well---that is they break something, they move and trip over
their own feet, etc--by limiting actions and movements to a more
balanced/efficient scale, you can actually increase the agility of a
person, not by "boosting" actual capability, but by eliminationg a
limitation.
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