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3
votes
1answer
53 views

Is there a way to create a “captcha”-like problem that computers can verify, but only humans can solve?

In a normal CAPTCHA scenario, a computer creates a challenge and a correct response to it. (The challenge is an image of distorted text, for instance, and the response is the characters depicted.) ...
67
votes
13answers
11k views

Why can I look at a graph and immediately find the closest point to another point, but it takes me O(n) time through programming?

Let me clarify: Given a scatterplot of some given number of points n, if I want to find the closest point to any point in the plot mentally, I can immediately ignore most points in the graph, ...
2
votes
2answers
130 views

Which is the equivalent processing of human brain in terms of computer processing?

How many flops my brain can process, or how many GHz is a human brain capable of? Is it valid to think that each celular brain is like a small cpu? (like cuda architecture). Our brains works in ...
2
votes
0answers
165 views

In what ways can we distinguish between a human and bot behavior?

Updated based on comments: In what ways can we distinguish a human being doing certain activities online and a bot programmed to do similar activities, say checking email, downloading some music ...
2
votes
5answers
244 views

What are some problems which are easily solved by human brain but which would take more time computers?

Are there any problems which can be solved by human brain in a very less time but a computer may take a lot of time or a computer could never solve it ?