Gene Fuller wrote:
You may have taken the first step along the path to enlightenment. It
has been explained previously on RRAA that interference is a result, not
a cause.

Of course, the Big Bang is the cause of everything,
but what caused the Big Bang?

When one says A causes B which causes C which causes
D, etc., it is not false to say C causes D. There may
be a long line of causes and effects. One step's cause
is the previous step's effect. Interference causes
visible interference rings in a light experiment. And
of course, interference is just one event in a long
line of cause and effect. Without interference, there
would be no interference rings. Without beams of light,
there would be no interference. Without a Big Bang,
there would be no light.

In a line of events, interference is an event that has
a cause and has an effect.
--
73, Cecil http://www.w5dxp.com