Sometimes I just don't get anything right. >The link I posted to Nimtz illustrates >how this can be done ( my own work is unpublished or >I'd link you to it instead). The key issue remains, how do we >define velocity?
Original: It could be defined, for a two way data transmission system, as repeated meaningful transmission of data x over distance d, and return in average time t of transmission t of a meaningful response message f(x), as v = t/(2d). Correction: Communication velocity of a two-way data transmission system could be defined as v = t/(2d) for transmission over straight-line distance d of varied data x_i and return of a modified verifiable response message f(x_i) in average transmission-response time t, where data x_i is not transmitted until receipt of f(x_(i-1)) is verified. The average time t would have to be for a large set of data transmissions {...,x_i,...}. Achieving FTL is then the condition v > c, or t < 2d/c. Regards, Horace Heffner