We observe that the dynamics of our crosslinking polymer system behave analogously to the thermodynamic phases of liquid and jammed colloids. That is, flow and intermittent flow represent dynamics of a fluid phase, while clogging is analogous to jamming. To demonstrate this, we invert the axes of Fig. in Fig. . Where the jamming phase diagram uses colloid concentration (1/ϕ), this system uses alginate concentration (1/C Alg ). Where the jamming phase diagram uses energy of interparticle interaction (k B T /U ), the corresponding variable in this system is the concentration of calcium (1/C Ca 2+ ), the means by which alginate molecules are attracted, or crosslinked, to one another. With the flow phase diagram in Fig. inverted in this way, both flow and intermittent flow appear far from the origin. We note that the region in the plot where 1/C Ca 2+ → ∞ and 1/C Alg → 0 falls beyond the limits of Fig. and represents highly concentrated, uncrosslinked polymer solutions, which may clog for reasons beyond gelation, including pump failure. The boundary between intermittency and clogging is represented by the solid line. Notably, the solid line matches qualitatively the boundary between jammed colloids, near the origin, and the fluid phase .