To think straight, it is advisable to expect all qualities and attributes, adjectives, and so on to refer to at least two sets of interactions in tim… - Gregory Bateson

Numbers are the product of counting. Quantities are the product of measurement. This means that numbers can conceivably be accurate because there is a discontinuity between each integer and the next. Between two and three there is a jump. In the case of quantity there is no such jump, and because jump is missing in the world of quantity it is impossible for any quantity to be exact. You can have exactly three tomatoes. You can never have exactly three gallons of water. Always quantity is approximate.

:2) The interaction between parts of mind is triggered by difference, and difference is a nonsubstantial phenomenon not located in space or time; difference is related to negentropy and entropy rather than energy.

We can never be quite clear whether we are referring to the world as it is or to the world as we see it.