> On the contrary, I've had to mentor a lot of C++ developers where they were surprised when their put-const-on-it approach to providing safety resulted in prod

> On the contrary, I've had to mentor a lot of C++ developers where they were surprised when their put-const-on-it approach to providing safety resulted in production bugs. Can you provide any concrete example on how adding a const qualifier introduces bugs? Besides disallowing calls to mutable member functions, adding const qualifiers changes nothing in the code.