Things can be imprecise, and can be modeled as such. Things can be chaotic, and can be modeled as such. Technologists tend to think in a binary between things t

Things can be imprecise, and can be modeled as such. Things can be chaotic, and can be modeled as such. Technologists tend to think in a binary between things that can be represented by a single number and those that can't, but that doesn't reflect reality but rather the common (limited) tools of our trade. Sometimes you've got to do a dot product of some distributions for possible values of future vectors, and you get a vague -- but still very real -- answer.