  Tsirelson's problem deals with how to model separate measurements in quantum
mechanics. In addition to its theoretical importance, the resolution of
Tsirelson's problem could have great consequences for device independent
quantum key distribution and certified randomness. Unfortunately, understanding
present literature on the subject requires a heavy mathematical background. In
this paper, we introduce quansality, a new theoretical concept that allows to
reinterpret Tsirelson's problem from a foundational point of view. Using
quansality as a guide, we recover all known results on Tsirelson's problem in a
clear and intuitive way.
