> if a contributor-to-be happens to be an employee, FSF does not trust > his words about origin of his contribution,
This seems reasonable to me in the USA. Many companies have a clause in their contracts that say that the company owns anything the employee creates during their tenure, *even off hours*. Given how complex employment contracts are, it's reasonable to ask for a legal disclaimer from employers, much like we ask for assignments from contributors. It's not about trusting the people involved, it's about protecting against people *not* involved who may have bad intentions, who may take advantage of honest mistakes. The FSF has always been careful about legal clarity of their ownership of GNU contributions; employer disclaimers is just another one of these. Also consider that some of us might be using the USA legal definition of "class" here wrt discrimination: https://definitions.uslegal.com/p/protected-class/ Defining your own classes outside of those might lead to misunderstandings.