Five years ago, I read Eating Animals by Jonathan Safran Foer; a think piece on the ethics of killing animals for food.
I can't remember why I decided to read it, having never given animal welfare much thought. Animals are animals and some of them are tasty. What's the problem?
Eating Animals didn't quite turn me into a vegetarian but it did slow me down.
It made me consider a fish probably doesn't fancy being stabbed in the face any more than I would.
We assume only cuddly creatures feel pain and that it doesn't matter how a fish feels.
I found myself working through a range of arguments for and against eating meat.
I started at the callous end of the scale where the miserable existence of a caged chicken is completely irrelevant.
That chicken is merely a dispensable means to a delicious end.
At the other end of the scale, all life on Earth is sacred and important.
The most important thing is to have given it a bit of thought. It is also important not to be too rigid. We all change our minds.
I am pretty good at changing my mind. On the one hand, I am quick to trust in scientific principles over anything that smells like conspiracy or quackery.
On the other hand, I don't want to get so entrenched in my views that I miss out on the bigger picture.
Mark Plotkin gives a TED Talk called "What The People Of The Amazon Know That You Don't" in which he describes how a shaman healed his foot where Western medicine had failed.
He also points out how a shaman uses three rainforest plants to treat something called leishmaniasis, a "really nasty protozoal disease" that afflicts 12 million people around the world.
My usual instinct is to disregard any sentence with the word "shaman" in it.
But there is so much more to the world than my limited experience.
That's why I need friends who view things differently to me.
I need someone to suggest that maybe those silly little worms are an important part of the planet we all share.
Sometimes the best response is, "dude, it's just a worm". But other times - more often, I suspect - a better response might be: "Wow, stop everything. Check it out. It's a worm."