Identifying the key pathway and mechanism used by cancer to metastasis is a step to intervening and blocking cancer from metastasizing. And given the majority of mortalities are a result of cancer metastasizing understanding this pathway is a big first step to reducing mortality. Saying empirically it would cut 90% of deaths is clickbaity but this is a big discovery. If we apply this and begin to develop ways of controlling the fluid viscosity around cancer cells we have a practical application of this knowledge. Combine this with methods of early detection and you have a real shot of limiting cancer deaths.