choice, mechanism, metaphor, inhibition, communication, interference, circuit, type, separation, direction, fast/slow read/write, parallel/serial, harmony, fundamental, immediate/timed, once/many times, space/time.
choice, mechanism, metaphor, inhibition, communication, interference, circuit, type, separation, direction, fast/slow read/write, parallel/serial, harmony, fundamental, immediate/timed, once/many times, space/time.