Cartoon depicting different challenges that can arise when trying to fit the MS with no continuous and complete coverage. Current JWST surveys are very deep, but limited in size, selecting mainly low-mass galaxies. Pre-JWST surveys are not deep enough to reach such low M_★. Offsets and/or changes in the slopes can make the connection between the two regimes hard to quantify if we do not consider the ensemble of both pre-JWST and JWST surveys.