The Naked Scientist

Relebogile Mabotja hosts The Naked Scientist · 13 July 2026 · 14m

Speaker 1: Seven or two, the Naked Scientist and the Naked Scientist, there's back on a seven Speaker 1: O two Afternoon's do double one double a three oh seven o two and the Speaker 1: WhatsApp line oh seven two seven oh two one seven two. Speaker 2: I'm going to jump straight into it because so many of you've not had a Speaker 2: chance to chat to the good doctor. So doctor christmyth Eppy Monday. The very first Speaker 2: one says, when and how does the brain identify whether a bag, or a box Speaker 2: or a kettle is full or heavy just by lifting it? Speaker 3: Hmmmm? Interesting? Speaker 4: An interesting question indeed, because we used to do this thing at school. In fact Speaker 4: us thinking about this just the other day because I watched someone fall for the Speaker 4: same trick. You have a jug which is almost empty, there's just a little bit Speaker 4: of water in there, and you make it look like it's really heavy as you Speaker 4: pass it from one person to the next, and each person really struggles to pick Speaker 4: it up, and then the last person they pass it to, who's the person who Speaker 4: the victim picks it up and is so expecting it to be incredibly heavy that Speaker 4: they put way too much effort in and the jug flies off the table and Speaker 4: the water goes everywhere. Don't do this if you don't own the property you're doing Speaker 4: it in. But it's hilarias when people fall for it because basically, we plan a Speaker 4: movement based on what we anticipate the effort that's going to be needed…

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