I should have defined domain better, my bad. Domain as in e.g. 'real time graphics'. True, one needs to understand what it takes to have true domain specific ex

I should have defined domain better, my bad. Domain as in e.g. 'real time graphics'. True, one needs to understand what it takes to have true domain specific experience and not just 'company X widget specific. I haven't been looking for a job in a long while so C++ might have been a bit non-obvious example. There are lots of positions where C++ alone is worthless without basic engineering level understanding of linear algebra, and it's harder to find peoples for those roles. Hence, the roles are less disposable (as long as there is a market for the product).