We know the Apple Watch is smart enough to no longer display notifications when you've taken it off, which is awesome. However, I'm slightly concerned how the Apple Watch will behave while using the user is actively interacting with other Apple devices. If I'm actively having a conversation in Messages on my Mac, iPhone or iPad with someone, will the watch be smart enough not to vibrate and display a notification every time they message me back? Because if its not, then you could burn through those "90 notifications" included in the estimated 18-hour battery life pretty quickly. Not to mention, it'd be really annoying. Perhaps the Watch can rely on Continuity to determine you've already seen the message? But if that's the case, and I step away from my Mac or set down my iPad without locking it, how long would it take the Watch to figure out I'm no longer in front of those devices and start feeding me notifications again? I realize the answer to all of these questions are, "nobody knows because nobody has one", but I thought it'd be worth a speculative conversation.