This pops up occasionally on HN but I don't get it. Are you reading every line of every installation script you run normally? What about the things they downloa

This pops up occasionally on HN but I don't get it. Are you reading every line of every installation script you run normally? What about the things they download and execute? Are you never running a binary installer where you don't have access to the code? Genuinely curious what the nightmare is.