Again, loads of people sent me this and boy is it wonderful!

Again, loads of people sent me this and boy is it wonderful!

Loads of people have sent me this great new video from OK GO. It must have taken a VERY long time to make and has some lovely stuff in it. Enjoy.

On Friday I posted these puzzles. If you have not tried to solve them, have a go now. For everyone else, the answer if after the break…

1) How many times can you subtract the number two from the number fifty?

2) You drive a bus from London to Edinburgh. At the first bus stop, 43 people get in. At the second stop, 9 more people get in. At the third stop, 45 passengers step off and 12 people get in. After nine hours, the bus arrives in Edinburgh. What is the name of the driver?

Two puzzles this week! Solutions on Monday.

1) How many times can you subtract the number two from the number fifty?

2) You drive a bus from London to Edinburgh. At the first bus stop, 43 people get in. At the second stop, 9 more people get in. At the third stop, 45 passengers step off and 12 people get in. After nine hours, the bus arrives in Edinburgh. What is the name of the driver?

I have produced an ebook containing 101 of the previous Friday Puzzles! It is called **PUZZLED** and is available for the **Kindle **(UK here and USA here) and on the **iBookstore** (UK here in the USA here). You can try 101 of the puzzles for free here.

David B sent me this wonderful video. So simple but very powerful. What do you think?

On Friday I set these 2 puzzles. If you have not tried to solve them, have a go now. For everyone else the answers are after the break…

1) What 5-letter word actually becomes shorter when you add two letters to it?

2) Find a number less than 100 that is increased by one-fifth of its value when its digits are reversed.

Two puzzles this week! Solutions on Monday.

1) What 5-letter word actually becomes shorter when you add two letters to it?

2) Find a number less than 100 that is increased by one-fifth of its value when its digits are reversed.

I have produced an ebook containing 101 of the previous Friday Puzzles! It is called **PUZZLED** and is available for the **Kindle **(UK here and USA here) and on the **iBookstore** (UK here in the USA here). You can try 101 of the puzzles for free here.

Denis M brought this great video to my attention. Just shows the power of acetates!

On Friday I set this puzzle…..

The day before yesterday Joan was 17. Next year she will be 20. How can that be the case?

If you have not tried to solve it, have a go now. For everyone else, the answer is after the break.

Here is the Friday puzzle! Solution on Monday.

The day before yesterday Joan was 17. Next year she will be 20. How can that be the case?

I have produced an ebook containing 101 of the previous Friday Puzzles! It is called **PUZZLED** and is available for the **Kindle **(UK here and USA here) and on the **iBookstore** (UK here in the USA here). You can try 101 of the puzzles for free here.

We have just made a new Quirkology video. Enjoy!

Jerome H sent me this great animated Ebbinghaus illusion…..amazingly the orange circle stays the same size!

I think it originates here, along with lots of other cool stuff.

UPDATE: Re the origin, of this, Stan noted:

One week ago at the Vision Sciences Society meeting in Florida was the annual visual illusions Hollywood style competition of the 10 best illusions of the year. They will be featured in Scientific American Mind. It already has a Wikipedia entry at http://en.wikipedia.org/wiki/Ebbinghaus_illusion. The last sentence of that entry is:

“The winner of the 2014 Best Illusion of the Year Contest, submitted by Christopher D. Blair, Gideon P. Caplovitz, and Ryan E.B. Mruczek, of the University of Nevada Reno, animated the Ebbinghaus illusion, putting it in motion.”