The majority of the time it's a safe assumption though, so I'm not sure developers can really be considered to blame. The reality is, without it, developing so

The majority of the time it's a safe assumption though, so I'm not sure developers can really be considered to blame. The reality is, without it, developing software for a platform takes more effort which I think is one of the reasons languages have taken on the initiative of building portable interfaces. Even C11 has added threads.h.