TR3, just how many of your 53 posts over 6 weeks have been to ask a moderator to close a thread? This is not the first time I am seeing these comments from you.
The subject is relevant as Stagger rightly points out; it may have taken a turn towards matters scientific, but then, if one asks how IRS/INS work, you are also going to get answers based on math/physics, the same as we are getting here, only we are moving away from contempory Newtonian Physics and into Quantum Theory etc to provide/postulate explainations.
If it is too deep for you, take Staggers advice and read another thread or the Beano.