When Wells calculates the oxygen level in the tunnel, the way he uses the handheld device is very similar to Quantum Leap's Al Calavicci's use of his handlink to Ziggy, including hitting the side of the device and the sound effects it makes. See more
Don't feel bad, Cisco. You're just not wired like me.
You're right. I'm hell of a lot smarter. I programmed that weapon to trigger an anti-vibrational force field around whoever fires it. In this case... that's you, genius.