What is the significance of the lighthouse? Why does Osiris think this jagged, blocky pillar of metal and rock is any different from the hundreds of others on mercury? Why put the ark of the covenant in this one? Is this the key to controlling the machine that is mercury? Is it the reason the sun looks so damn big? Is it an osiris clubhouse that they gave a fancy name? I personally think it is some kind of guidance system or beacon (as that is what lighthouses are for anyway), maybe not a beacon in a litteral sense but maybe rather a metaphorical beacon twoards some sort of knowledge or enlightenment. Perhaps it is a guidance system for the time gates or acts as a dimensional or temporal referance point of some kind to aid in vex navigation. Thoughts?