Okay, you might be right on that point. (Destiny)

by HavokBlue, California, Sunday, November 16, 2014, 17:45 (3900 days ago) @ Ragashingo

The article in that link is really depressing though.

Jonty Barnes: Yeah. You haven’t experienced all of earth. If you’re a higher-powered Guardian you’ll be doing additional experiences on there that are harder that open up combatant behaviours that aren’t available at the lower levels.

Well, no, that's blatantly wrong. You experience all of Earth before level 10 and adding additional enemy spawns or turning on the Lightswitch modifier doesn't change that. Expansion content might populate all those locked areas on Earth, but that's sure not the base game.