a couple of questions have gone unanswered, and gotten lost in the insults.
1: why do we have to point satellite dishes to a certain fixed point in the sky, if not to aim at geostationary or geosynchronous satellites? esp. the ones that networks use which people (like a buddy of mine) pilfer which require huge dishes and precise aim.
2: what are all those points of light, that travel across the sky after sundown and before sunup on dark nights? you'd have to try hard not to see them, when lying on the ground in the middle of the desert.
3: what happened to the "pseudolite" argument, seems like that was just abandoned by the fe'ers when they couldn't bend it enought to fit their belief. now they invoke the magic word "stratolites", which is so far a vaporware pipe-dream. (but the must be working, they'd say, because the earth is flat which is therefore proof they exist.)
trust me, gps uses satellites. when you are in the middle of the pacific ocean, or in the middle of a barren wasteland with nothing man-made within a 200 mile radius, and all that bombed and shelled to powder, you tend to think there isn't another way to locate to within sub-meter accuracy.
btw just to clarify for fellow re'ers, gps satellites are in low-earth, not geostationary orbits, and so cross the sky pretty quickly. that's why it takes so many of them to have at least three in line-of-sight at any given time and place on earth, even in mountain valleys. they also do require clocks, incredibly accurate atomic clocks that even have general relativity written into the algorithm to compensate for the earth's gravitational distortion as well as their own orbital velocity, because it's the differentials between the clocks due to speed of light, which gps receivers calculate.