I think it should be noted that sometimes an authentic
Brutus might go for $200, now I know that I will never stumble onto such a situation, but it can and does happen. In Denver, a first edition Milton was discovered at a garage sale. I believe it eventually went for $60,000. One has to beat a lot of bushes, and know what one is doing and have a little luck. But it can happen, we are all hoping that we might stumble onto something like that, and Joshua, even though he didn't find it, wanted to know if that is what happened when
Brutus went for $200. Of course, it is improbable, but with as many events as occur in a moment, some improbable ones are due to slip through. One way it happens is that an expert dies, and the widow or the kids don't know anything about what they got. A friend found a (piece of)
medieval manuscript at a garage sale for a dollar, I am sure the family just thought it was junk (it was not anything super-special, just special to him). Some people will find something like
Brutus, and let it slip through because of how improbable it is. On the opposite
side of the spectrum are those who will throw probability out the window, and also discretion when they see something "too
good to be true." In-between is the person that has knowledge, sees the item, and weighs in their mind, understanding that while improbable, all the individual elements of the item are right, and it has to be true.
There was a movie made about a woman and her painting, called "Who the #%^& is Jackson Pollack?" Most everything she has ever found at thrift stores is junk, but she did find a Jackson Pollack painting. Art Experts have dismissed it based on their opinions, but a forensic artist found a fingerprint of Jackson Pollack in the paint. It can happen and it does happen, but not necessarily for you or me.
btw, I don't get the pseudo-star trek references. I think that whoever made those dismisses the improbable, mistakenly thinking it was impossible, Joshua did not seem to have this problem.