[atomicnature]

Conditional agree. I'd say as a beginner, the "rigour" of particular situations can be too harsh. So when you're starting out, it is better to have lower penalties for mistakes. However, as one advances in career, then it sort of becomes necessary to reduce disasters emerging from one's actions. This doesn't mean mistakes should be avoided, but one has to control the effects of one's mistakes through proper sandboxing/experimentation setup.