  The suppression and modification of high-energy objects, like jets, in
heavy-ion collisions provide an important window to access the degrees of
freedom of the quark-gluon plasma on different length scales. Despite
increasingly precise and differential measurements of the properties of jets in
heavy-ion collisions, however, it has remained challenging to use jets to make
unambiguous and model-independent statements about the quark-gluon plasma. Here
I will give a personal take on some origins of these challenges, including the
difficulty of modelling and biases from jet selection that obfuscate the direct
interpretation of jet modification measurements. I will discuss a few model
studies that have helped to disentangle the source of non-intuitive effects in
measurements, and finally highlight data-driven approaches as an interesting
opportunity toward studying the quark-gluon plasma in a model-independent way
using jets.
