Simplify the following text for a Grade 11 native English-speaking person.
Original: At its inception , ordinary language philosophy ( also called linguistic philosophy ) had been taken as either an extension of or as an alternative to analytic philosophy .
Simplified: Ordinary language philosophy is a way of doing philosophy that uses ordinary , everyday words . It came out of analytic philosophy , the most common way of doing philosophy in English-speaking countries in the 20th century .