Comment by irjustin

> I took knowability to be, how well you know the properties of a particle?

No, I'm using the literal definition: https://www.merriam-webster.com/dictionary/knowability

> I thought Hisenberg meant the more you knew about one property (i.e. the smaller the bound on the position of a particle) the less you knew about the other property.

Yes, this is it, but remove "you knew"... just - property. The more one property is defined, the less the other property is.

The key I'm trying to get across is it doesn't matter what you, the observer know/don't know (i.e. measure). As temp ->abs_zero, momentum becomes more-undefined/fuzzier. Nothing to do with you measuring.

The "other" property is fundamentally undefined (i.e. not knowable, i.e. able to be known).

Maybe we're getting hung up on our shared understanding of "knowable" and I shouldn't have used it, but it is, technically, the correct usage.