The principles of the Domino effect are often mis-understood. The basic rule is that if 2 pizzas of the same format (same size,topping, etc) come into close proximity of each other (< 1 meter) then a chain reaction caused by actions of the "Henstrech" field (in both pizas) will cause an atomic chain reaction. The formtion of a sub molecular "black hole" is not uncommon. Although the effect is often no more than subdivisonal slippage and a folding of both pizzas in on themselves. A similar reaction can be caused by carrying a single pizza on the rack of a small motor scooter.............