19 April 2017

The Conversation: Facts are not always more important than opinions: here’s why

To call something a fact is, presumably, to make a claim that it is true. This isn’t a problem for many things, although defending such a claim can be harder than you think. [...]

It’s not only that facts can change that is a problem. While we might be happy to consider it a fact that Earth is spherical, we would be wrong to do so because it’s actually a bit pear-shaped. Thinking it a sphere, however, is very different from thinking it to be flat.

Asimov expressed this beautifully in his essay The Relativity of Wrong. For Asimov, the person who thinks Earth is a sphere is wrong, and so is the person who thinks the Earth is flat. But the person who thinks that they are equally wrong is more wrong than both. [...]

Matters of opinion are non-empirical claims, and include questions of value and of personal preference such as whether it’s ok to eat animals, and whether vanilla ice cream is better than chocolate. Ethics is an exemplar of a system in which matters of fact cannot by themselves decide courses of action.

Matters of opinion can be informed by matters of fact (for example, finding out that animals can suffer may influence whether I choose to eat them), but ultimately they are not answered by matters of fact (why is it relevant if they can suffer?).

Opinions are not just pale shadows of facts; they are judgements and conclusions. They can be the result of careful and sophisticated deliberation in areas for which empirical investigation is inadequate or ill-suited.

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