All of what I have typed below is taken directly from that site:
- Angels have low mass
- Angels are made of light
- Since Angels are made of light, the speed Angels travel at is the speed light travels at
- Light is massless, so Angels are massless
- But Angels have low mass, so they must have mass?
- Angels travel at close to the speed of light (note i said close, that mathematics doesnt produce the exact value of light speed, unlike what the author claims)
- Lets introduce mass dilation, something that the author conveniently didnt mention
- I repeat, Angels travel at close to the speed of light, so Angels have an enormous mass, which becomes infinite as they get closer to light speed.
Conclusion: Angels have low mass, no mass and infinitely large mass.
Contradiction, much?