Summary
Digital representation can be faithfully replicated and transmitted
It’s common to “compute” on a digital representation
The binary digits (bits) 0 and 1 are a natural way to interpret the presence or absence of a phenomenon
Binary numbers and arithmetic are like decimal except the are limited to the two numerals 0 and 1
Bits are bits -- what they mean depends on how we interpret their meaning … sometimes they are numbers, sometimes letters, sometimes sound, sometimes color, ...