98 posts

Nicely done, Channel 9 (posted by Dr Herbie).

Back to Forum: Coffeehouse
• giovanni said:
contextfree said:
*snip*

If I have ever been exposed to it, my memory definitely removed it very well.

Thanks for the link, very instructive!

Edit: That was brilliant Charles

It broke the CoffeeHouse for me

I can only navigate to the last three threads via the menu on the right side

giovanni said:
*snip*

It broke the CoffeeHouse for me

I can only navigate to the last three threads via the menu on the right side

Works on my machine

• vesuvius said:
*snip*

Works on my machine

Thanks!

Where is that machine located?

I'll come over and post from there

• I tried 'April Fool' then gave up (ended up coming in via the forums link which was left open?)

• There should be something like that everyday.

• Erik just wanted us to watch his C9 lecture series again.

Nice.

http://en.wikipedia.org/wiki/Church_numerals

• Sven Groot said:

I don't know how to solve those formulas...

I got it, but only by coincidence: I had a series of classes on lambda calculus last week and I recognised the Church encoding of the natural numbers as lambda functions (as contextfree said). Simply count the level of recursion to get the number, in this case it was 9-deep, so it represents '9'.

I recognised the other question as product notation. Going by the frequent use of '3' and how 3*3 == 9 I figured the answer was the same.

Note that I actually advocate implementing something similar to this as an actual captcha in future. Keep it just as difficult, I like the idea of there being a forum with just me on it

• W3bbo said:
Sven Groot said:
*snip*

I got it, but only by coincidence: I had a series of classes on lambda calculus last week and I recognised the Church encoding of the natural numbers as lambda functions (as contextfree said). Simply count the level of recursion to get the number, in this case it was 9-deep, so it represents '9'.

I recognised the other question as product notation. Going by the frequent use of '3' and how 3*3 == 9 I figured the answer was the same.

Note that I actually advocate implementing something similar to this as an actual captcha in future. Keep it just as difficult, I like the idea of there being a forum with just me on it

The next captcha should be "Within the context of computational complexity theory, prove or disprove P=NP."

• Bass said:
W3bbo said:
*snip*

The next captcha should be "Within the context of computational complexity theory, prove or disprove P=NP."

Or you could bypass the filter and go directly into the topic via bing and find out the answer.

• Bravo, Charles!

• W3bbo said:
Sven Groot said:
*snip*

I got it, but only by coincidence: I had a series of classes on lambda calculus last week and I recognised the Church encoding of the natural numbers as lambda functions (as contextfree said). Simply count the level of recursion to get the number, in this case it was 9-deep, so it represents '9'.

I recognised the other question as product notation. Going by the frequent use of '3' and how 3*3 == 9 I figured the answer was the same.

Note that I actually advocate implementing something similar to this as an actual captcha in future. Keep it just as difficult, I like the idea of there being a forum with just me on it

Yeah, I can't reach any of the forum pages due to this...

The prompt comes up, then IE complains that it cant reach the website

I was able to go to the homepage and get into this thread from there.

• W3bbo said:
Sven Groot said:
*snip*

I got it, but only by coincidence: I had a series of classes on lambda calculus last week and I recognised the Church encoding of the natural numbers as lambda functions (as contextfree said). Simply count the level of recursion to get the number, in this case it was 9-deep, so it represents '9'.

I recognised the other question as product notation. Going by the frequent use of '3' and how 3*3 == 9 I figured the answer was the same.

Note that I actually advocate implementing something similar to this as an actual captcha in future. Keep it just as difficult, I like the idea of there being a forum with just me on it

Component factory have something similar, you are asked

Answer the question to prove you are not a spam bot, but a human.

Binary number 1001 is what in decimal?

or

how many fingers on a human hand?

Obviously Phil used to lurk around the channel 9 forums a lot so I wonder why the 1001 binary? The long and the short of it is spam in his fora is now almost non-existent, whereas it is a growing problem in the Sandquist fora. Look at the mix comments and here on channel 9, a lot of the posts are begining to get targeted more and more.

• I just solved it.

• kettch said:

Fun stuff.

Please tell me that your little game didn't keep anybody from non-stop slaving away on Rev9?

This is all I've been doing for months.

Rev9 was an elaborate cover for this new feature.

• ManipUni said:

I just solved it.

I got it on my first guess, like a real scientist

(Second guess was going to be 42).

Herbie

• Cool and fun idea. First guessed 42 and then 9 =)

• Dr Herbie said:
ManipUni said:
*snip*

I got it on my first guess, like a real scientist

(Second guess was going to be 42).

Herbie

Ditto

• ScanIAm said:
W3bbo said:
*snip*

Yeah, I can't reach any of the forum pages due to this...

The prompt comes up, then IE complains that it cant reach the website

I was able to go to the homepage and get into this thread from there.

Bash the stop button, fill in 9, then no more worries