Once we are thoroughly convinced we have arrived at the truth, further searching would not only be fruitless, but and we may even be led, due to the enthusiasm of discovery, to dislodging the truth we have correctly acquired.
Wow, how can there be two truths? Also, can you imagine if scientists applied that kind of thinking, "no guys, I don't think we should continue doing more experiments in case we dislogdge the findings we have acquired" or "we shouldn't attempt to find a cure for AIDS as we have thoroughly convinced ourselves that a cure cannot be found".