The reason we don’t Pasken on Hashkafa is because the mind has room for more than one idea, even at one time. Eilu VaEilu is always true, but in action we can only do one. Therefore we need to ‘Pasken’ one way or the other. But in ideas, we do need to incorporate even conflicting ideas and judge and balance between them.
I find a Remez to this in the fact that Shel Rosh has four compartments whereas Shel Yad has only one.