Viewing profile — joelvh

I've created some command aliases in my bash profile. There are also tools to create shortcuts for git commands. Other than that, I have created shell scripts that I copy to projec…

I wonder how many companies are currently running tests like this in the enterprise. Anyone have an idea of what people currently use?

You might be able to signup for a new account and get another free year.... if the deal is still on by then.

Great job! I wrote up that post about WolframAlpha and wonder if there's an API so you could integrate WA to make it more robust?

Interestingly enough, WolframAlpha can generate a CAPTCHA image of each of these text questions, as to make it harder for a bot to decode AND answer the question! Check it out: htt…

Exactly. The whole discussion here points to the major flaws in using text as CAPTCHA. Maybe if questions were more metaphorical they would be harder to guess, but then there is no…

Exactly!

Haha.

If you were able to analyze the sentence structure of all 180 million questions, how many different sentence structures would there be? This all points to the fact that you can bui…

Ha! Valid point!

Also think about the way algorithms (like WolframAlpha) interpret the structure of the questions. Like some of the other commenters, switching some words around makes WolframAlpha …

Right. And as a little experiment, it was surprising the results I got. It also implies that it is not hard to structure the sentences in a way that makes it harder for WolframAlph…

Good point. That gives a good indicator as to how the algorithm works. Not necessarily based on colors, but rather words in a list...? Maybe the construction of Text CAPTCHA senten…

I played around with the demo page and used WolframAlpha to answer the questions for me.... With a little massaging, WolframAlpha would get you pretty far in hacking it. http://new…