Talk:866: Compass and Straightedge

Explain xkcd: It's 'cause you're dumb.
Jump to: navigation, search

No, the comic is funny because many geometrical theorems prove something along the lines of "With a compass and straightedge you cannot construct..." (e.g. a square and a circle with the same area) If you have knowledge of this type of proof, the humor is that you think he's about to talk about something that is impossible in geometry, but really he's talking about the inapplicability of geometry to real life. This is often a difficulty with nerds and brainy people, they try to apply their theoretical knowledge to human relationships and fail. 75.103.23.206 19:53, 13 December 2012 (UTC)

And then there's the converse: people who are able to apply theoretical knowledge and succeed. 76.106.251.87 04:33, 5 June 2013 (UTC)

The explanation mentions that there are "three such constructions", but doesn't go any further. What they are should at least be addressed (or linked to), even if we're not going to elaborate on the "why" of their impossibility. For the uninitiated, they are squaring the circle, trisecting any angle, and doubling the cube. 76.106.251.87 04:33, 5 June 2013 (UTC)

If such constructions are "impossible with the use of modern algebraic techniques," then why don't we just use older algebraic techniques?  ;) 213.203.138.251 (talk) (please sign your comments with ~~~~)

Those "modern algebraic techniques" just did prove that you can't solve this constructions by using only "classical geometry".--Dgbrt (talk) 18:14, 29 June 2013 (UTC)

I tried forming a club for compasses and straight edges but no one signed up :( ~JFreund

Personal tools
Namespaces

Variants
Actions
Navigation
Tools

It seems you are using noscript, which is stopping our project wonderful ads from working. Explain xkcd uses ads to pay for bandwidth, and we manually approve all our advertisers, and our ads are restricted to unobtrusive images and slow animated GIFs. If you found this site helpful, please consider whitelisting us.

Want to advertise with us, or donate to us with Paypal or Bitcoin?