"Tempered" Glass: Quality that Remains Our (Expensive) Little Secret

In the parallel universe in which we bought this house without the City getting their two cents (actually much more than two cents) in, we would NOT have chosen a tempered glass window at the top of the stairs. Yep, it's tempered. This requirement is apparently because, should we trip up the stairs so forcefully that only the window stops us from sailing out of the second story, we wouldn't want said glass to shatter. From the sheer force. Of us tripping. Up the stairs. Really fast. Like a projectile or small human rocket.