New walking route

Ethics teaching day! We started a new topic today (having finished “stealing” last week): Jumping to conclusions. It’s actually about applying a bit of formal logic to statements to transform them into other statements, and how that changes the truth value. For example, one of the statements we discussed today is “All carrots are vegetables”, which is true. If you reverse the statement, “All vegetables are carrots”, you get a false statement.

Then we moved to trickier examples, like “All Persian cats are fluffy” – which you can’t reverse in the same way as easily: “All fluffy are Persian cats”. You need to add a noun to the second part: “All Persian cats are fluffy animals” → “All fluffy animals are Persian cats”. Again, true becomes false. Then “All birds have wings”, which needs to be modified to “All birds are animals with wings” → “All animals with wings are birds”. Again, true becomes false.

Next week we move on to examples where the truth value doesn’t change when you reverse the sentence. The goal of the topic is really to get the kids thinking about the rules of logic rather than to teach them rote rules, so that they can avoid jumping to incorrect conclusions.

On the way home I walked a new route which I haven’t explored before, through a local bush park. This is a park that straddles a creek, and consists of uncleared eucalyptus forest. I took some photos on the walk:

It’s nice having relatively untouched bushland so close to home. There are several areas like this within walking distance of my home. The full walk to Ethics and home via the bush park was over 9 kilometres, and I climbed 176 metres of elevation. It’s a very hilly area around here.

Speaking of which, I’ve been keeping track of everywhere I walk using the Fog of World app for a few months. Here’s my current map showing everywhere I’ve walked in that time:

New content today:

One thought on “New walking route”

1. Persian cats aren’t fluffy, so the truth value is unchanged and the sentence remains false even when reversed.

Persian cats are silky.