This coming Sunday is the Feast of Christ the King, and if I were a really creative Christian blogger, I would think of something to blog about that.
But as it is, the Great Idea that has occurred to me for a short post (inspired by the fact that Sunday is also All Hallows' Eve) is simply to link to this old article of mine on Reformed epistemology. It's nearly eight years old now (originally presented at a conference in 2003) and has never been published nor submitted for publication, but that just means that it's easy to link without having to worry about copyright and journals. (Insert grumps here about how paper publishing buries philosophical ideas.)
I discuss inter alia the "Great Pumpkin" objection to Reformed epistemology--the objection that there is no principled way for the Reformed epistemologist to tell Linus that he is irrational to believe in the Great Pumpkin. That discussion begins on p. 9.