add to definitions, delete learn as teach def
add to definitions, delete learn as teach def

whilei/cr17-to-zero,webappzero/the-value-of-learning,webappzero/cr17-to-zero,webappzero/cr17-to-zero,webappzero/the-value-of-learning,whilei/cr17-to-zero,webappzero/cr17-to-zero,webappzero/the-value-of-learning,whilei/cr17-to-zero