Sugar. How it has changed us. There is a speech i cherish from the seventh Doctor Who, storyline Remembrance of the Daleks, (the anniversary episode) which goes :
JOHN: Hmm? Your tea. Sugar?
DOCTOR: Ah. A decision. Would it make any difference?
JOHN: It would make your tea sweet.
DOCTOR: Yes, but beyond the confines of my tastebuds, would it make any difference?
JOHN: Not really.
DOCTOR: What if I could control people’s tastebuds? What if I decided that no one would take sugar? That’d make a difference to those who sell the sugar and those that cut the cane.
JOHN: My father, he was a cane cutter.
DOCTOR: Exactly. Now, if no one had used sugar, your father wouldn’t have been a cane cutter.
JOHN: If this sugar thing had never started, my great-grandfather wouldn’t have been kidnapped, chained up, and sold in Kingston in the first place. I’d be a African.
DOCTOR: See? Every great decision creates ripples, like a huge boulder dropped in a lake. The ripples merge, rebound off the banks in unforeseeable ways. The heavier the decision, the larger the waves, the more uncertain the consequences.
JOHN: Life’s like that. Best thing is just to get on with it.
See? Life’s like that, and as it turns out, more than we think.
Three million years ago, a gene mutation switched off a sugar-making enzyme in early hominids. Our ancestors actually became unable to breed with those who still had the enzyme, possibly causing the emergence of our evolutionary grandparent, Homo erectus.