Joining means the possibility of separation is there. What does it mean to separate the self from the self? Meaningless. How can I separate myself from myself? So what is this joining? In Sanskrit it becomes even more clear. Sangeoga is connection, contact. Any contact means that two things are different. The only place with these two things cannot be different is when we are talking about you, the self,. You are not even in multiple personality disorders. One is one person at a time. Not all persons at a time; so you are only one unit. This was the final conclusion of Descartes in his great project of doubting whatever can be doubted. He said