Is the relativity theory postulate of simultaneity reasonable? M is half way between light sources A and B. Simultaneous pulses from A and B arrive at M at the same instant a moving observes heading from A to B arrives. Does the moving observer see the lights turn on simultaneous in his frame? According to relativity theory O’ observes the pulses starting at different times in his frame. Let us see if this is a valid conclusion. While O’ is still heading to M the light pulse from A leaves the source at A. When O’ arrives at M at the same time as the sources from A and B, O’ concludes from the constancy of the speed of light that both wave fronts must necessarily be located equidistant from M. Any divergence from this conclusion would be observed as contradiction of the observed simultaneous arrival of the pulses at M. Therefore, O’ concludes that the while the sources of the pulses need not necessarily start at the same time, the wave fronts must be located equidistant from M at all times during their mutual journey to M. Suppose that as O’ passes A on the way to M he zeroes his clock and later the A source emits a pulse. When the pulses and O’ arrive simultaneously at M, O’ can determine when the pulse left A. From the argument above, if B had been pulsed earlier than A then its location is farther from M than A in the O’ frame. However, the wave front from B must emain equidistant from M at all times as the time of flight of both wave fronts are identical in order that they arrive at M simultaneously. B. If both A and B emits a series of simultaneous pulses before O’ arrives at M and the pulses are recorded by O’ while still approaching M, O’ has no justification in saying the pulses were not simultaneously emitted by A and B, even though he pulse from B could have preceded the pulse emitted from A. As O,’ approaches M the time difference between pulses from A and B will approach zero as O’ approaches M and will be zero at the instant of the simultaneous arrival of the pulses at M. If the series of pulses were emitted at regular intervals, say one per second, then if O’ analyzes the time difference in the arrival of these pulses he could synchronize his clocks to the rate of the stationary time of A and B. In both cases discussed above, once O’ learns from O that A and B are equidistant from M in the stationary frame then O’ must also conclude the pulses wee emitted simultaneously in the O’ frame. These measurements do not guarantee that O’ knows the pulses were emitted simultaneously, but the wave fronts from B must be such as to guarantee their simultaneous arrival at M with the A pulses. When O’ learns from O, the stationary observer, that the A and B sources are equidistant in his frame then O’ must unambiguously agree the pulses left A and B simultaneously. C. We have a space ship with clocks located in the forward and rear locations. The O’ observe then sends a pulse of light to both clocks, but knowing he had accelerated at some time in the past to reach his current velocity O’ would know the clocks are not synchronized. O’ then rotates the clocks 90 degrees so they are extending to the left and right side of the ship. O’ now sends a synchronizing signal to both clocks transverse to the direction of travel. When O’ slowly reorients the clocks to the forward and rear locations of the space ships the clocks are synchronized within the O’ ability to measure any differences. It appears to this writer that simultaneity is a concept confined to the psychological state of mind of the state of information of the human observer and has nothing to do with any universal physical principals. There is no physical process that denies any observer a measurement allowing him to accurately synchronize clocks. Experiments that are purported to support relativity theory require reevaluation in light of the loss of an essential element of RT, to wit, the postulate of simultaneity. An essential element ignored in theoretical discussions of RT is that all ‘moving’ platforms have undergone acceleration. Hence. the ability of the mass vibrational energy state of these accelerated masses to exchange energy with the surroundings and intrinsically have been unambiguously affected. The energy exchange efficiency is decreased with acceleration and increased velocity. Deceleration reverses this process. Likewise, from Doppler analysis the absolute velocity of moving platforms may be measured. In experiments like A and B above the moving platform will observe blue/red shifts of the rear and forward approaching wave fronts and hence determine absolute velocity measurements. One can make a series of ‘Hubble’ measurements from a space ship and locate a ‘best position’ at rest with the surrounding stellar masses. While not guaranteeing the discovery of the center of the universe, an effective local approximation to a universal center is possible. As stated above simultaneity postulate follows from the different arrival times of pulses arriving at a moving platform at O’ which is not equidistant from the sources, or from the wave fronts of sources. These same conclusions of simultaneity will follow measurement of any set of signals by a moving platform, where the signals, of whatever nature they happen to be, including racing snails, are moving with equal and constant velocity.