We, human beings, are supposed to sleep 8-10 hours a day, as told by doctors. However, because of work, school, a gig, or just plain insomnia, many people (most of which, if not all, come from the urban areas) tend to not follow this routine and, instead, sleep less than the prescribed amount of time.
I know that this is not a new story (and I do not know myself, anyway, why I am writing this). We all experience this sleeping phenomenon, don't we? 24 hours, it seems, is not enough for us to accomplish all our tasks.
And so, when we our out of sleep and we have to get up early tomorrow for another day of work, to whom do we turn to? When we have subconscious sense of time, who do we ask for help? If we simply can't just get up at 6 in the morning, who do we need to do the waking for us? The alarm clock, of course!
The clock. The alarm clock. The clock. The digital alarm clock. Gone were those days when humans had to use sundials to know what time is it. it was useless, come to think of it, during nighttime as there is already no sun. Gone were those days when ordinary humans had to go and look at the moon and the stars to know if a year or a month--hey! I thought we're talking about clocks and not calendars. Oh well.
The point is, what do you think will happen today if alarm clocks were not invented? Assume that despite all the ingenious inventions man has created, we are still stupid enough to not think of alarm clocks. Probably, everybody would be late, so to give a solution to this, office work will be moved to later times like, say. 1 in the afternoon! Oh, I'd love that to happen, wouldn't you?