John and The Doctor in “Remembrance of the Daleks”

Sugar?

Ah. A decision... Would it make any difference?

Would make your tea sweet.

Yes, but beyond the confines of my taste buds, would it make any difference?

Not really.

But...

Yeah?

What if I could control people's taste buds? What if I decided that no one would take sugar? That'd make a difference to those who sell the sugar and those who cut the cane.

My father, he was a cane cutter!

Exactly. Now if no one had used sugar, your father wouldn't have been a cane cutter.

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.

Every great decision creates ripples, like a huge boulder dropped in a lake. The ripples merge and rebound off the banks in unforeseeable ways. The heavier the decision, the larger the waves, the more uncertain the consequences.

Life's like that. Best thing is just to get on with it.