Of the families, then that's more valuable than, but we may be to remove? Therefore, it should not risk losing something in hand, for what we would like, but it is not sure whether to receive or not.
In the hands of Over the course of more valuable, but we could not take them. So should not risk losing what is at hand. In exchange for what we wanted to. I was not sure what to get or not.
Of the in hand. That of course than worth but we probably couldn't get it. Therefore, we should not risk losing what is at hand. For what we want. But it is sure to get?