Are first impressions always right

I think the older you get the sharper your instincts become. You have seen most 'types' of people before, so your first impression tends to be more accurate. Doesn't mean you are always right though....

NOT reliably for most people
it is a specialty you have to hone

One example? i can tell in under 15 seconds if there is ANY hope of romance with a woman.

i can see the possible but often they are also Improbable

First impressions may or may not be incorrect, but they're often incomplete.

only for very perceptive persons.
many are fooled by the mask

not always - but dang they are hard to overcome

Subjectively, yes.

Noooooooo they aren't

A lot of the time no.

Mostly yes.

50% of the time