We introduce an algorithmic approach to Euclidian geometry6 which provides an experimental framework involving Euclidean constructions and deconstructions thus enabling a foundation2,12 for testing Everett's interpretation of quantum theory4,5. We contend that the cosmos be modelled as the advance in space time until some event occurs leading to the termination of some phenomenon, in the sense of the algorithmic halting problem14. Our approach involves iterative geometrical constructions using

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... uclid's proposition 3 which are equivalent to a Turing machine. Our conjecture is that the postulates of Euclidean geometry, for which we require particular extensions to postulates 2 and 310, are physical principles, and also that our algorithmic approach is identical to quantum theory4,5. We suggest that our conjecture concerning quantum theory and the second law of thermodynamics is that they are mutually dependent, this too being a principle. We suggest a unifying theory for gravitation and sub atomic particles2,7,11,12. We propose a new experiment: the investigation of anomalies in astronomical observations with as example the phenomenon of black holes disappearing when galaxies collide with or without gravitational wave emission8.