Ive seen many people on here debating the actual real-world danger of having a stock Apple hard drive (one without built-in drop protection) in the optical bay of a MacBook Pro. Obviously there is a theoretical danger that sudden movement could jerk the disk while its in motion and cause damage. But Id like to see if anyone with significant real-world tech experience actually considers this a major issue. What are the necessary conditions for a scenario where the drive could get damaged? How severe does the movement need to be? Is there only a danger when the drive is spinning or all the time? Right now I have my SSD in my optical bay and my HD in the HD bay, but I would like to switch that around if its really not a significant concern. But, as a college student, I move my computer around quite a bit every day, so I need to take that into account.