Is the statement, 'Gravity (including time) is the 4th dimension' scientifically tenable? If not, how and why not? If so, how and why so?

(Re: http://forums.delphiforums.com/EinsteinGroupie - TOTAL FIELD THEORY.)

Modern day Finalized Reality is like a bus schedule - there'll be another one along shortly. Present day hypotheses are often perceived and presented as theories.