causes from luck

No luck in science,
just a whole lot of art and craft
in luck found before by aft,
in the sum of causality we
don't know. When events
transpire, say Hey!

That's so! 

If it's really great,
and not like fate's style
where we're always
concerned, put it down
with a smile
and toast. To
unknowns! - in
a twinkling
wink.

There's 
no science in luck,
but we sure 
can't seem
to think.