I have seen some texts where it is used "exist" on affirmative sentences.
I knew that for affirmative sentences with he/she/it, it must be used S at the end of the verb.
For example, a sentence that I saw in an article:
The application needs to exist.
- Is this sentence correct? "needs to exists" would be incorrect?
- Wouldn't be correct exists, since that the person here is the application (it)?
- If it is not correct, can someone point a source which explains the concept?