Seems to me most difficulty occurs context switching when languages are similar in many ways yet completely different in others e:g Java, C++, Go, C# . Trying t

Seems to me most difficulty occurs context switching when languages are similar in many ways yet completely different in others e:g Java, C++, Go, C# . Trying to work in multiples of those in that same job can be hard. Doing one of those, combined with Python for example, is easier as the brain can switch between 2 distinct modes. Although even there, one can start writing in the wrong style by mistake. Doing e:g Smalltalk on the side I don't see as a problem as it looks so different that the brain switches into another "special mode".