Doseing twice after another?

I ate a couple hits the other day with my buddy and once we started tripping I was like, "Damn dude... I want to eat some more." But he told me that it wouldn't intensify the trip, it would just make it longer. True or False?

I prefer not to. If you at some now then some more 2 hours from now, they would peak at different times. There is surely some overlap, but not the same as eating the whole thing at once. Some people like to gauge where they are then eat more though.