Will time have meaning in the post singularity world? Let’s start by understanding terms. The first term we will work at understanding is “time.” Almost everyone agrees that time is a measure of change, for example, the ticking of a clock as …

### Time Travel

The Tipler cylinder is a cylinder of dense matter and infinite length. Historically, Dutch mathematician Willem Jacob van Stockum (1910–1944) found Tipler cylinder solutions to Einstein’s equations of general relativity in 1924. Hungarian mathematician/physicist Cornel Lanczos (1893–1974) found similar Tipler …

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