About measurement

Having suggested that cognition is measurement, it is time to say a little about what measurement is.

The most common view seems to be that we passively receive data at sensory cells, and then use logic or computation as applied to that data.  When data is received from a sensory cell, I shall call that sensing (for want of a better term).  My aim will be to draw a distinction between measurement and sensing, though in ordinary language usage the two overlap somewhat.