RE:RE:RE:Oil PriceIainCaimbeul, Yeah dot product is zero if orthogonal if memory serves. Anyway quantifying causes and effects. I always have wondered how you economists decide how much weight to put on various input factors or vectors. This board puts a heavy weighting on oil price which makes sense. But if oil price is increasing because the US dollar is getting weaker and not because of tighter supply then how do you sort all of that out? Anyway, good to see solid analysis from you guys.