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PARITY. “Note that the Feynman diagram for the above process is the same as for the scattering of an incident electron by a photon which has previously produced a positron and electron pair, the positron going on to annihilate the incident electron, the remaining electron from the pair proceeding onward in time.” https://lnkd.in/gDaxUYAS View in LinkedIn

LOOSE ENDS. “If the Schrodinger equation doesn't care about time direction between measurements why should we?” https://lnkd.in/gDaxUYAS View in LinkedIn

THE EXERCISE. “ For the electron, superpositions of states must be available in the observer's future at least until Tn when it disappears, in order for it to move forward in time to be measured at T2, T3..... What is the difference between these two situations?” https://lnkd.in/gDaxUYAS View in LinkedIn

THE EXERCISE. “At some times T2, T3..... the physicist makes measurements and finds the two particles. For the antiparticle, moving backwards in time, superpositions of states must be available in the observer's future where it will exist at least until Tn when it appears, in order for it to move backward in time to be measured at ......T3, T2.” https://lnkd.in/gDaxUYAS View in LinkedIn

A veritable blaze of Montpellier maples planted along the upper path leading to Girona’s Sant Daniel valley. View in LinkedIn

THE CAMBRIDGE PHILOSOPHICAL SOCIETY. “Adam Sedgwick (1785–1873) and John Stevens Henslow (1796–1861). Both men were aware that the study of the sciences in their University was largely moribund. Although there were professors of both botany and geology at Cambridge, and post-Newtonian mathematics was flourishing, the sciences...were a “peripheral activity”. The purpose of the University was primarily as a training ground for clerics.” https://lnkd.in/gkn3BKFd View in LinkedIn

SYNTHESIS OF CONJECTURES. “Let us combine the Feynman-Stueckelberg interpretation with the STH above, at times +t and -t very close to zero, when equal amounts of matter and antimatter are being created.” (STH = Symmetrical Time Hypothesis). https://lnkd.in/gDaxUYAS View in LinkedIn

CONSENSUS. “Physicists insist that the Schrodinger equation is symmetric in time and has no preference for a particular now. Let us take this completely seriously.” https://lnkd.in/gDaxUYAS View in LinkedIn

GO FOR THE RIDE. “If we are faced with two alternative hypotheses, both consistent with experiment, one with great explanatory power and leading to a completely symmetric spacetime, the other asymmetric and full of philosophical problems, perhaps we can suspend our disbelief still further and see what the STH predicts.” (STH = Symmetrical Time Hypothesis). https://lnkd.in/gDaxUYAS View in LinkedIn

ANTIMATTER BACKWARDS IN TIME. “From now on in this essay all antiparticles are assumed for the sake of the argument to move backward in time as a matter of physical reality.” https://lnkd.in/d4BvAHFn View in LinkedIn