It's time's like these that separate the true long-term investors from the phonies.

The firestorm of negative sentiment surrounding Intuitive Surgical (NASDAQ:ISRG) and its daVinci robotic surgery platform hit a new high this week, causing the stock's price to set a 52-week low. Is it truly time to hit the sell button, or is this a classic example of Mr. Market's shortsightedness? In the following video, Brenton Flynn runs through the news that has investors panicking, and outlines why he's not running for the hills, just yet.