[atoav]

Yet when we talk about controlling trains, airplanes, freight ships, medical devices, nuclear power plants and space stuff we suddenly know how to do it?

There is software engineering and it is known how to do things that absolutely must not fail. It is just thst these standard are not commonly deployed if nobody forces you to deploy them. And why would you? Costs money and a software error is widely treated like divine intervention.

[JohnMakin]

There is a big difference between knowing something must not fail, and how to make it so it will not fail. The latter is where opinions and approaches often differ, in ways that more formal engineering does not.

I'm very wary of anyone in tech/software eng that says "this is the only right way to do this." I'm aware those attitudes exist everywhere.