If you follow thought as far as it will go you end with the universal, the major premise, the condition of possibility, the God of the philosophers, or being as the emptiest of categories. But out of the universal you can only get the universal, so if the particular needs to be explained you might have a choice function that is out of the system, or more likely a virtuality like in the many worlds interpretation: 'you can have your particular, your choice, but you must also admit all possible particulars, all possible choices. Starting from the particular as ultimate term you easily get the universal, since that is only a certain idea, a product of thought. Thought however cannot accept it as a starting point, it will always defer to a condition of possibility, or some mathematical formula. This is as it should be, it is the watershed between though and... something else.