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Reference.org
B-theory of time
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<p>The B-theory of time, also called the "tenseless theory of time", is one of two positions regarding the temporal ordering of events in the <a href="/facts/Philosophy_of_time/Y6WLqA2z">philosophy of time</a>. B-theorists argue that the flow of time is only a subjective illusion of human <a href="/facts/Consciousness/IAxmgt6c">consciousness</a>, that the past, present, and future are equally real, and that time is tenseless: temporal becoming is not an objective feature of reality. Therefore, there is nothing privileged about the present, ontologically speaking. </p><p>The B-theory is derived from a distinction drawn by <a href="/facts/J._M._E._McTaggart/64d3dB9o">J. M. E. McTaggart</a> between <a href="/facts/A_series_and_B_series/qPoSXP2c">A series and B series</a>. The B-theory is often drawn upon in <a href="/facts/Theoretical_physics/Cs2Y12rQ">theoretical physics</a>, and is seen in theories such as <a href="/facts/Eternalism_(philosophy_of_time)/eoqPNMA5">eternalism</a>. </p>