Re: down-votes and hope AC 9:41
Wish in one hand, shit in the other and see which one fills up first. There is no such thing as a 'cancer cell', only cells that have become cancerous. This is a very important distinction. Even the same cell at different times will have different characteristics due to its local environment as cells have para-endocrine function. You are entirely correct about the two things, however, your assessment of a good chance (sp?) is far from reality and simply rewriting DNA is not enough. Look up DNA methylation.
By adding or removing methyl groups, you greatly change the regulation of transcription as promoter regions and the gene itself can be occluded leading to up or down-regulation, different mRNAs being transcribed. This is to say nothing about pre or post-translation modifications that can occur. I'm not even going to expound on the fact that mutations and errors accumulate over ones life so how do we know what to rewrite. When we get a DNA sequence, it is the average representation of the individual bases if more than one cell is used in the replicated culture which is sequenced.
Likewise, Waspy and Martin show an ignorance of the true state of cancer research, prevention, and treatment. Even with the many developments, we have done little to budge the overall death rate from cancer as roughly 3 in 10 people in western nations die from complications arising from it. We have improved survival times and are able to detect it earlier, but that is neither here nor there for the purposes of this discussion.
It seems the more we learn about cellular biology, the things that we don't know get bigger an order of magnitude faster. To wit: when I was in uni over a decade ago, I argued with my profs (world renown nuclear cell bio experts) that the 'non-coding' regions were important. They countered that 'junk DNA' had no affect - the widely held orthodoxy at the time. Now we know better, but every time we make a new discovery, we think we know it all and will save us from ourselves, all the meanwhile 75-80% of cancer and cardiovascular disease (which kills around 60% of people in western countries) is due to environmental factors we could reduce: excess processed carbs and sugars, excess processed fats and oils, excess processed meat (no red meat won't kill you), excess alcohol, lack of green vegetable intake, lack of exercise, smoking, lack of quality sleep, and pollution.
Its funny how the overall rate of premature death at the hands of man hasn't changed much since prehistory, only instead of dying at the hands of our fellow man, it is now by our own. Ah progress.