Many years ago I was confronted with a claim that the location coordinates of the Great Pyramid of Giza match the exact number sequence for the speed of light in vacuum measured in metres. This claim can be found here for example: http://world-pyramids.com/en/world-...za-plateau/great-pyramid-pillar-of-light.html I'm just going to focus on the claims concerning the coordinates of this pyramid in relation to the speed of light. The claim is usually put like this: Speed of light through vacuum is 299,792,458 m/s. A geographic coordinate of 29.9792458, 31.134658 will end up on the Great Pyramid Of Giza (https://www.google.com/maps?q=29.97...149,31.134204&sspn=0.018308,0.019205&t=m&z=17) Both contain the number sequence 299792458, which to some is too peculiar to be a coincidence. Therefore architects must have had "secret knowledge" about the properties of light, information some believe must have been passed down by higher intelligent beings. However, there are a number of aspects we must take into consideration before we jump to such conclusions. And most importantly we must realize that we are tweaking a number of factors to get a perfect match. Without these tweaks we quickly realize that the match is in fact not much of a match at all. According to GeoHack the geographic coordinates to the pyramid is 29.979175, 31.134358 (not the same latitude value.) http://tools.wmflabs.org/geohack/ge...08_03.69_E_region:EG_type:landmark_scale:2000 To get a latitudinal hit on the pyramid you actually need no more than five digits, as opposed to all nine. The last four numbers are basically redundant and pointless. The speed of light through vacuum is an integer. A latitude of 299,792,458 isn't a valid degree so we have to consciously put a decimal in the right place. Two options are available, 2.99792458 and 29.9792458, so another conscious decision must be made to fit the speed of light claim. We have the option to switch the latitude value with the longitude, but doing this points to another completely uninteresting place. A conscious decision has been made to put the right value in the right place for no other reason than to support the claim. The longitude can be just about any value between -180 and 180, but we consciously pick the one that will end up on the Giza pyramid, forcing a connection. A latitude of 29.9800000 also gives us a hit on the pyramid, but as an integer this value would actually be faster than the speed of light through vacuum. We make a conscious decision to limit this value downward. We consciously choose to use the metres as unit when there are many other distance units to choose from. The ancient Egyptians never used metres as a unit. They used 'cubits'. (http://en.wikipedia.org/wiki/Cubit) If they actually knew about the metre one would expect them to use such unit for measurement as well. They simply did not. Conclusion: In order to make the connection we have to actively include various options that fit the original claim, and exclude the many that doesn't, even though they are still fully valid options. A matching sequence of five digits is not particularly strange or extraordinary. People have won the lottery matching far longer sequences than just five digits. Sometimes numbers simply match up without any connection whatsoever. So because this argument require some forcing we can conclude that this is likely nothing but a coincidence. Please mention if any errors have been made in my analysis.