How Aircraft Stay In The Air

In article , George
writes
Peter Twydell wrote in message news:pFgBVJAkIDTAFwW+
...
There was some research into the theory of falling toast, and it was
discovered that the toast did not always land with the buttered side
down. Further investigation showed that this was because the wrong side
had been buttered.

I don't have the URL for this, unfortunately, so does anyone know what
methods are used to ensure that the correct side is buttered?

That is an easy one. The side on the plate that is downward is NOT the
to be buttered side.
To create a machine of great simplicity just butter BOTH sides and
drop the slice of toast toward the floor.
:-)

This would IMHO lead to either:
the toast hovering above the floor, edge down, oscillating laterally
or:
the toast landing on its edge.
--
Peter

Ying tong iddle-i po!