@denis76 asked ❝Still, I wonder why Chemotherapy (docitaxel) Doesn't Kill All Cancer Cells? Chemistry shoots sparrows from a cannon and misses? Right?❞

Not a scientist or physician, but the common rule of thumb is that there are about 1 billion cancer cells in each 1cm³ of tumour.

So it's more like shooting at a skyful of sparrows with grapeshot from a cannon. You'll definitely reduce the number of sparrows, but no matter how big the cannon is, you probably won't get all of them, and then the ones left will start reproducing again.

That's why triplet therapy pays off: ADT and ARSI attack the cancer cells in different ways than chemo does (it's like feeding the sparrows birth control as well as firing off cannons).