If you don’t like conspiracy theories or half baked ideas, you can stop reading now, its long. However, if you enjoy to pick the threads from a poorly made suit, read on, I welcome the exchange.
Two points to start with:
1. Now, PRECEED EVERY SENTENCE WITH A "MAYBE", "POSSIBLY" or finish it with a "?" (as appropriate)
2. Read point 1 again.
* The BBB is in simple terms, the walls of capillaries http://www.daviddarling.info/encyclopedia/B/blood-brain_barrier.html