Cancer cells are fundamentally different from non-cancer cells due to their response to cell cycle signaling, not necessarily because they divide more quickly.

“it's this failure to respond to cell cycle signaling which results in unregulated growth and it's this capacity to leave the site of origin and go and grow in an unregulated manner elsewhere”

“the thing we learned in medical school that was incorrect was cancer cells divide more quickly than regular cells uh those of us that pay attention today know that that's not actually true at all the fundamental difference between a cancer cell and a non-cancer cell is the response to cell cycle signaling it's that a normal cell doesn't divide slower it just when it's told to stop dividing it stops dividing the cancer cell doesn't when it's told to stop dividing it says piss off i'm going to keep dividing yeah”

“so by definition cancer cells have mutated and they they sort of have this trait that is common to all cancers so we would say that sort of the syn quanon of cancer is unregulated cell growth or dysregulated cell growth so it just means that cells that grow without responding to normal cell cycle signaling”

“so so when a cell is perfectly functioning it knows how much to grow and and it's well cancer loses that ability that is one of the Hallmarks of cancer it just keeps growing doesn't grow faster by the way that's a misnomer people think cancers grow faster than non-cancer there's no real evidence that that's the case they just don't stop growing”