I need to find whoever decided to make both 66 blocks with the split down the middle and blocks without it with no identifying mark as to which type is which and pour glitter* over their head.

At left: no split. I’d been putting bridge clips on it for no reason and got a rude surprise (Zeppelin on a country station!) when I expected to have the left three pegs and the right three isolated.

At right: has the split. You have to install bridge clips to join the two sides.

* Biodegradable glitter of course – the sugar or seaweed based kind