All the information about any computable problem can be represented
only 2 nouns: 0, 1 (or any other bistable
that can flip-flop between two easily distinguishable states, such as
"on"/"off", "magnetized/de-magnetized", "high-voltage/low-voltage", etc.).
Strictly speaking, these can be used to represent discrete
things; continuous things can be approximated to any desired degree,
For a literary and philosophical view of this, see:
"…leaking electrons make it more difficult to know when a transistor is in
an on or off state, the information that makes electronic computing
The transistor is not just another element of the electronic world. It
is the invention that made the computer revolution possible. In essence
it is an on-off switch controlled by the flow of electricity. For the
purposes of computing, when the switch is on it represents a one. When
it is off it represents a zero. These zeros and ones are the most basic
language of computers."