It's easy to take things for granted as we go through our everyday lives, but when we stop and think about some of those things it can just take our breath away.
Consider, for example, fire. When we reflect upon all the things about earth that have to be just right for fire to exist and then think about all the physical characteristics of an animal that have to be just right for that animal to be able to use fire, and then contemplate what that animal's culture would be like were the animal or the earth even slightly different such that fire could not be made or harnessed, it just leaves one shaking his head in amazement.
In this 21 minute video Australian geneticist Michael Denton walks us through the astonishing series of properties and characteristics of the earth, fire, and mankind that have to be precisely calibrated in order for humans to have developed the culture that we have today. Had any of those properties been other than what they are humans might never have survived at all, much less developed an advanced culture.
Someone hearing all this for the first time might well be astounded by the fortuity of it all.
The book on which the video is based is available here.