I think I tend to agree when put in that way as its most others do also. If you would explain to me a little further what you mean by location, time and clustering. About location, do you mean a place on the map or something else, also the clustering is that on the map or something else and does time mean time in the game per sitting or your entire time in the game since one started.
Thanks all for the insights and information.
Well, location, I don't think has anything to do with loot. Sounds so me like it would be easy to exploit. However, many of us who have played for a while can attest that globals sometimes (even often) come in clusters in time, more than random clustering can explain.
For example, I hunted teladons once and got 5-6 globals in as many mobs (forget exact number now). It's hard to believe that could be due to randomness. If loot were random in time, the probability of this happening is something around 1 in 10 million. Another example, I was crafting Ark keys for a couple months with zero globals on them until one morning I crafted a few and got about a half dozen globals in just a few minutes (on different items). I didn't notice other people globaling more at that time, so was it just my avatar "luck" that had been increased at that time?
Another example: player A grinds ark instance 10s for weeks and gets 1 codex, player B comes to Ark does a handful of them and in one day loots at least 4... during the same time period. Random? Player A can't see how it is.
Running a mining company, I see returns each day from a number of short (200 ped) runs from different people. I can say that TT returns in mining definitely have temporal trends. For example, one day 80% of the runs are around 130 ped, the next day 80% are around 200 ped though hit rates remain about the same. We might see no globals at all for a week but then the weekend comes and 80% get a global in the friday morning run. These variations happen all the time and often coincide with the weekend, which means they might be tied to overall activity or maybe crafting volume. Sometimes there's weird stuff, like once when about 5 of us were mining, within a few minutes of each other, 3 of us got large HOFs.
So... it seems like many different factors can affect loot. The ones I'm sure of are time factors, universal or economic factors, avatar factors, and of course there's some randomness in there too.