Duplicate this page before you start, and write your answers into your own copy.

Last lesson you found that ethical reasoning can be better or worse even when nobody can say which answer is right. Today somebody is going to tell you that is nonsense, and that it is all just opinion.

🌡️ 1. The moral thermometer


Six statements. For each one, decide where you stand from 1 (strongly disagree) to 5 (strongly agree). Write your number before anybody moves.

Then, for each statement in turn, the class stands on a line across the room, with 1 at one wall and 5 at the other. Look at the shape of the line before you sit down, and note it in the last column: packed (almost everyone in one place), split (two groups), or spread (all over the room).

✍️ Write here, on your own.

Statement My number The class line
Telling a friend their outfit looks good when you think it does not is fine.
It is wrong to break a promise to a friend.
Lying to the man at the door was the right thing to do.
Eating meat is wrong.
Slavery was wrong, even in 1750, when it was legal in many places and widely accepted.
Torturing a baby for fun is wrong.

✍️ Write here, on your own.

  1. Which statement had the class most tightly packed? Which was most spread?

  2. Does a packed line mean we know the answer? Think back to Semmelweis, and to what you decided about consensus in Truth and Evidence.

  3. Does a spread line mean there is no answer to know?

🗣️ 2. "It's just your opinion"


Somebody watching the line has an argument for you.

Premise 1: People disagree about moral claims. Look at the line.

Premise 2: There is no measurement that can settle who is right.

Conclusion: So no moral view is better than any other. It is all just opinion.

This is a version of moral relativism: the view that moral claims are only true or false relative to a person or a culture, so no single view is correct for everyone.

✍️ Write here, on your own.