[neutralino]

Originally Posted by D.A.Peel Secondly, where do I say that tachyons violate causality?

In the statement in your blog about the story your father told you about someone leaving earth and coming back before you left, then saying that you find it hard that people can take tachyons seriously. I took this as an implicit comment that tardyons violate causality. Is that not what you meant?

Nothing with any mass at all can travel at or faster than the speed of light.

That's not technically true. Tardyons do not need to be massless; they can have imaginary mass, but it does not have to be zero.

Light takes approximately 8 minutes to travel from the sun to Earth and approximately half that time to travel half that distance.

Point taken. Your box must be pretty long though!

But what does that have to do with light taking longer to travel to one place than another?

Nothing. I read your theory incorrectly, sorry. I'll have another, proper, read of it and try to give some constructive criticism.