Rainbows, consciousness and yogacara

What is a rainbow? Have you ever wondered that?

Scientifically speaking, rainbows are caused by light being refracted (bent) upon entering a droplet of water, reflected on the back of the droplet, and refracted upon leaving the droplet. This double refraction splits up the light since red light is refracted less than blue light.

So for a rainbow to exist we need sunshine and raindrops... but we need one more very crucial thing – a spectator. Unless someone is present at just the right spot, then there's no such thing as a rainbow. It's just light rays hitting the earth – business as usual! Rainbows are therefore phenomena that require an instrument of sense perception – like a person with an eye, or a camera.

Radical externalism

So what is a rainbow? It's not just sunshine or just raindrops, or indeed the combination of sunshine and raindrops. And it's not sunshine, raindrops and a person – because what if that person was looking the other way...?

In this fantastic article, writer Tim Parks interviews Riccardo Manzotti, an Italian psychology teacher who has a very interesting view on what a rainbow is. Parks describes Manzotti as a "radical externalist" – someone who believes "consciousness is a process shared between various otherwise distinct processes which, for convenience’s sake, we [call] subject and object."

So in his view, a rainbow is what happens when a person perceives light being refracted and reflected like this. Of this event of perception, he says "consciousness is spread between the sunlight, the raindrops, and the visual cortex, creating a unique, transitory new whole – the rainbow experience."

This is what makes him an "externalist" – he sees consciousness as being something that transcends the brain, being shared between the things being perceived (object) and the perceiver (subject). This is in contrast to what might be seen as a more orthodox view, where consciousness is seen as being confined within the brain.

Yogacara

It turns out there's a Buddhist philosophical and psychological system called Yogacara that might help us understand this a little more. Although it's a philosophy, the system comes out of actual practice – people doing yoga meditation over a period of centuries ("cara" means practice).

Everyone knows we have five senses: seeing, hearing, smelling, tasting, and touching, and in order to have these senses we need our sense organs: eyes, ears, nose, tongue, and skin.

Yogacara says that the combination of, for example, our eyes and looking at a rainbow, creates "eye-consciousness" (and the same thing for the other senses). Sound familiar? Yogacara also says we have "mind-consciousness", which is what comes about when the mind perceives something external (so in this example, perceiving the rainbow), or starts thinking and imagining.

So our guy Manzotti, without knowing it, is really a yogacarain. He's re-discovered a philosophy that has been around for about 1500 years! But I'm not sure he would be too happy with this since when asked by Parks if he was aware of Buddhist principles he got irritated, saying he tries "to avoid like the plague being mixed up with anything that smells New Age."! New age... pah!

According to Yogacara, consciousness is what arises when we bring the subject and object of perception together. These are really just two aspects of same reality, and, of course, both subject to constant change. Let's think about this for a moment... the subject (that's you, the perceiver) is subject to constant change. We're not (as my Zen teacher likes to say) solid snooker balls bouncing across the table of life. As Manzotti rightly points out, by thinking consciousness is not just confined to the brain, then we see that we are not separate from the world around us. We are subject to constant change. Our consciousness cannot be separate from the world and cannot survive outside the world.

The Buddha is reputed to have said (something like) "Your life is the creation of your mind."
Yogacara (sometimes called the "mind-only" school) gives us a structure to see how we create our life and how we create our sense of who we are.

Next week I'll continue on this theme and talk about how yogacara sees our ego and our (false) sense of self.

I am a member of the Zenways sangha and teach meditation and mindfulness in Camberwell, London. See my website for further details.

I'd love to hear from you

Are you a radical externalist? Do you agree with our consciousness being something created in partnership with what we perceive? I'd love to hear from you! Leave a comment below, join the discussion.

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