The complete set of DNA in a typical human cell will contain about 3*109 basepairs.
Written out on paper this amount the information would fill more than a thousand 700 page books.
If DNA breaks down, it has a maintenance function that gives it a limited ability to repair itself.
DNA
appears to be engineered.
Since DNA is designed to work, when it fails, we can use our intelligence to analyze the design,
find out what's wrong, and perhaps eventually come up with an intelligent fix.