[onemoreact]

For fairly simple organisms we have 'cold booted' DNA and swapped a cells DNA with artificial DNA from a closely related organism and it still worked. So, while humans have a lot of Genetic information I suspect you could get it to work if your willing to accept fairly low success changes.

As to read errors that effectively just a 'mutation' which are generally fairly harmless. If you stay below say 1,000 mutations, which would still take vary high accuracy, you have not significantly reduced your chances for success.

[iang]

True, but there's also the fact we don't know the whole human genome - only about 98% of it.

[onemoreact]

We have the raw data on the actual DNA for several people which is what you need to make a copy. What we don't know is what the data means and what all the mutations are in the wild. Which is what you want to know if we are going to start making changes.