# Recent content by Soca fo so

1. ### This pharse has three misstakes. How many mistakes does this phrase have?

This farce has had more than three miss-takes surely, at least four of them from me...but... Q: how many mistakes does this phrase really have? A: None.
2. ### Genius' performance on tests?

That depends on whether he ever manages to prove his cognitive emergence theory :smile:
3. ### Quantum Fields and Strings: A Course for Mathematicians

Thanks brocks, I was afraid that would be the case when they jumped straight into category theory in the first chapter. I think I'll have to put this book on the back burner for now. Thanks again for you reply.
4. ### Quantum Fields and Strings: A Course for Mathematicians

Has anyone here read Quantum Fields and Strings: A Course for Mathematicians vol 1 and/or vol 2? I was thinking about trying to tackle them but I'm unsure of what the mathematical prerequisites for doing so are. My background is in physics, but I have taken courses on differential geometry...
5. ### Tricky Questions

Do all the passengers board the bus at the same stop? Because thinking about it, where I'm from at each stop generally some passengers get off a bus and new ones get on so in theory you could have a full bus at every stage of the journey while at the end of the bus route more than 100 people...
6. ### Tricky Questions

I've made a bit of a mistake in the above; there are 6 possible values of f from those equations of which 12 is one. Yes of course!
7. ### Tricky Questions

If you were to charge pregnant women the fare for a woman plus the charge for a child i.e. 5/4 + 1/5 dollars that would give a solution of 15 pregnant women, 21 non pregnant women, 60 children, and 4 men. The issue would be whether to count a pregnant woman as two passengers, but since they...
8. ### Tricky Questions

There seems to be no solution when you treat the three groups, men, women, children as distinct but if you consider that each child is also male or female then consider a female child as being half a woman so should be charged half the fare for a woman as well as the fare for a child so 5/8 +...
9. ### Tricky Questions

This might be a stupid question, but is the driver included in the 100 passengers?

13. ### Line and Letter Placement Puzzle

I'm gonna guess
14. ### The Spinning Siren - a perceptual brain teaser

Okay just saw it switch looking through just one eye ;) so that theory is bogus. I seem to find it easier to switch the rotation when I look at her foot and the shadow of her foot at the same time, I cant help wondering if the shadow is playing some part here? Perhaps in simplifying the image in...
15. ### The Spinning Siren - a perceptual brain teaser

I think it would have something to do with one eye seeing her foot lets say, arrive slightly later on the right than the other eye does and your brain quickly switching between using (the information from) your dominant eye and the other eye when your dominant eye gets tired, so you would need...