"6. To minimize the chance of liability for IP infringement
Ignorance is not bliss. It can get you sued. And as some unfortunate software developers have learned, trade secret misappropriation can land you in jail."
I frequently hear it said that it is better to ignore the existence of IP when building software than to look for related IP beforehand, because prior knowledge of a given patent can be used as evidence against you in court. Am I misinterpreting this part of the blog post?
(full disclosure: I may be in law school)