Policy We do not try to decide which questions are homework, and we don't use a special tag. Users that want to receive hints rather than full answers should say so, and answerers should honor such requests (by not posting details or hiding them in spoiler tags). Other than that, the usual quali...

My knowledge is very vague as all we have are visual diagrams etc, but we have memory address and registers, the ALU being the heart(apparently). Single core CPUs process one instruction at a time AFAIK and multi-core have parallelism to some degree. So where do the millions of transistors come i...

No criterion exists that will work in all circumstances here. Even one-character edit may be disastrous. This is ultimately a question of trust. At the most we can make such option available for "trusted users" - if we (the community here) indeed trust them not to abuse this option. I too have...

There has been a tug-of-war in the hot-questions list. Community members like JonW seem to be unhappy with the traffic that it brings to their site: 'But we want to encourage people to post, that's the whole point of the HQ list!' I hear you cry. I disagree. We want to encourage people to th...

Right now the front page Popular tab is fairly broken -- it's a simple descending sort by views. As Joel said in podcast #18, it is "a self-fulfilling prophecy." But this is not intentional, it's only because we haven't had time to improve it yet! As I sit down to write a better algorithm, I tho...

Here is the traffic since The Workplace was created: These are the three questions that caused those huge spikes in traffic: Is it rude to leave an interview early if you have already made your decision? How should I deal with an employee who has slept with my wife? What is a 'friendly' ...

I've never quite got this. Just say you write a small program in any language at all which rolls some dice (just using dice as an example). After 600,000 rolls, each number would have been rolled around 100,000 times, which is what I'd expect. Why are there websites dedicated to 'true randomnes...

I've never quite got this. Just say you write a small program in any language at all which rolls some dice (just using dice as an example). After 600,000 rolls, each number would have been rolled around 100,000 times, which is what I'd expect. Why are there websites dedicated to 'true randomnes...

I have the following question that I just want to verify I have done correctly. Seems like something is wrong here. Let $L$, $L_1$, $L_2$ $\subseteq \Sigma^*$ such that $L = L_1 \cup L_2$, and $L_2$ is decidable. Prove that if $L$ is not recognizable then $L_1$ is not recognizable. Proof Sup...