A number of languages impossible to count exactly

The very scholarly Southern Institute of Linguistics now estimates that there are just over seven thousand languages spoken in the world today.

Very sadly, a language is lost forever roughly every two weeks. For a time there are only a few older speakers. Then there is only one in the sad situation of having no one to talk to in his or her first language. Then, as the last living speaker dies, the language dies with them . But new languages are being formed in large cities as people come together speaking what are plainly and obviously different languages, learn the language of the host community, but adapt it in subtle and not so subtle ways, until within two generations at most, there is a new language which older speakers of the host community language find difficult or impossible to understand.

This process of new language formation is impossible to count. But it may be proceeding as fast as language death.