[srigi]

Isn’t the cancer the “exponential game”? If there are 20 cancer cells in the body on day 1, on day 30 there will be 10737418240 (10.7B) cells if they double every day. This is how we were taught about cancer, so it is a very quick process when started. How can you get 7 years of ahead of time in this setup?

[arrosenberg]

They don't necessarily double every day. Some tumors are very stable, some are particularly metastatic. It often depends on access to blood supply and what type of cell has become cancerous.