Most dots are meaningful points.
Ninety-eight-point-nine is a fever.
Or a country and western station,
on your standard FM receiver.
When reading a dot means “full stop.”
The period tells you just when.
In math, each integer right of a dot
informs a negative power of ten.

In classical music notation,
different dots affect tempo or tune.
In software a dot means an update
of a version that you bought too soon.
But rampant dot-com speculation
smells a lot like a Wall Street balloon.