I have seen too many people copy pasting from google and introducing bugs in the code just because they don't understand what is going on. I know that HN is re

I have seen too many people copy pasting from google and introducing bugs in the code just because they don't understand what is going on. I know that HN is really focused toward web apps and mobile apps. However, sometimes is good to remember that there is plenty of software done also to control machines and perform mission critical tasks. In those cases often is better to have control over the whole software stack. That is why so many High-Tech companies have their own software libraries, for example for image processing. In addition there is an IP and licensing question.