When up-and-coming playwright Jake Brasch first set out to write his play “Reservoir,” now playing at Hertz Stage at the Alliance Theatre through May 4, he thought he was writing a play about the science of the aging mind.
He had been commissioned by the Sloan Foundation, a philanthropic organization that funds research and education in science, to write a play about cognitive reserve (the principle that some individuals are able to fend off aging better than others by developing their brain with exercise, mental stimulation, nutrition and social engagement).



