We try to provide the scientific information so that the people who are in a position of decision-making can make the best decisions possible.I was actually looking at so when it occurred to me that this that is the same subordinator as the that that introduces declarative content clauses. In other words, it's exactly the same as
I know that the people who are in a position of decision-making can make the best decisions possible.Notice in particular that in both cases that is omissible.
If my analysis is correct, it makes nonsense of any claims that so that should be used instead of so in clauses of cause, or in causes of result or in both or neither, all of which claims seem to be out there.