So the best way I can review this is to compare it to it's nearest "competitor", AK-47, by John
Bannon (which was inspired by this trick).
So Bannon's trick has one single fish, ever.
And some clever ways to avoid other fishes. The problem is, is it makes how the value of the card
is derived too apparent, in my opinion. There is also no possibility of a "miracle moment" where
with one fish, that doesn't ask suit or color, you know the card. That "miracle moment" happens
about 10% of the time with Think Of One.
With Think of One, while the spectator may suspect
that the value is derived from the hidden cards, there is no way they can articulate how, in any way
that makes any sense, because of the way the trick is constructed.
There is, at minimum, 1
single fish that is asked every time. It can go up to three. And this opens the possibility of
the nightmare scenario: You fish 3 times, and you get it wrong three times. At that point, the
idea you're a mindreader is laughable. I don't know how often that happens, but probably as much as
the "miracle" scenario. I think it's a weakness of the trick, and I ding it a star for that.
I wish Allen had done an actual performance, with spectators, of the nightmare scenario, to see
how he'd handle it and how it played.