Reality can be quantified very well. How many grams is a liter of water? How many grams did you poo today? How many meters did you walk today?

These are all examples of reality that can be quantified.

The point of mr dilger is rater, that you can create a model which tries to replicate reality. But it will never get something more then a model. Means it will always lack behind reality in some part. At best a model can get as good as reality. Like in physica there are very precise models to describe our physical world. Or at least it appears as this to me.