Also objective:

As far as we know humans are the only species to leave Earth’s gravity well. No other species has been able to do that in 4 billion years.

Humans have not left Earth's gravity well. We've built probes that have, but humans have only gotten as far as orbit.

Did you forget about the Moon landings?

	▲	NobodyNada 6 hours ago \| parent [-]
		That's pretty close to escaping the Earth's gravity well, but not quite out, since the Moon is definitely still orbiting the Earth.