[semaj]

"Are we talking about the speed of light here, or the speed of sound?"

I was talking about mass and speed in general. Once an object theoretically hits the speed of light mass is negated or inverted.

[ShadowAce]

OK. Theoretically, you are correct. Mass does increase with speed.

Now tell me how mass decreases (per the article) to a negative amount when it hits the speed of sound (speed of phonons).