Roberto Abraham Scaruffi

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How hard is it to trust your new friends when you are wealthy? Brandon Lee, Entrepreneur | Investor | Connector | Dreamer | Optimist 175 votes My mentor recently just celebrated his 38th birthday and he made a toast at his birthday dinner, saying that almost everyone at the table he had only known for 2-3 years. Over the past year, he's told me stories about his wealth and I've asked multiple times "So how many people have you met in your 15-year career in real estate that you feel you can trust?" He can only count on one hand. He... Read More » How do I get 21 with 1, 2, 3, and 4? Paul Olaru, almost certainly going to be a programmer 56 votes Well, 21=[1,2,3,4] 21=[2,3,4]+1 20=[2,3,4]. We need a way to get 20 this way. Let's try to multiply with 2 in the end. 10=[3,4]. Not good. Multiply with 3 in the end: not good either. Multiply with 4 in the end: 5=[2,3], which gives 21=(2+3)*4+1. Try and add 2 in the end: 18=[3,4]. Not working. Add 3: 17=[2,4]. Exceptionally bad.... Read More » How can I print 1 to 100 in C++ without a loop, goto or recursion? Brian Bi, software engineer and all-around nerd 136 votes #include #include using namespace std; int main() { jmp_buf b; int x = 1; setjmp(b); cout << x++ << endl; if (x <= 100)... Read More » If Katyusha were so effective, why didn't Germans create their own version? Jay Bazzinotti, Seeking my destiny; 4 patents, 3 books, 2 degrees, 24 countries, 46 statess, 138 votes The Germans did have a similar weapon, and it was called the "Nebelwerfer" or "smoke thrower". The name was designed to throw off the enemy with the intentions of the weapon. It was originally designed to throw poison gas, but these rounds were never used. Instead it threw high explosives. It was not accurate but it sent six or eight rounds down range very quickly. The weapon was exceptional... Read More » Career Advice in 2015: What should I major in at Harvard University to make the most money? Howie Reith, singer, entrepreneur 133 votes As my ex who graduated from Harvard Business School and now teaches entrepreneurship at MIT told me when I was looking at starting a business - if your motivation for starting your business is to make money, and if that is your metric for success, you are going to fail. What excites you? What inspires you? What makes you feel like you're making a difference? What is a field where you look at t... Read More » How do I improve my social skills? Hunter McCord 138 votes I have two bits of advice First and foremost, I would start regularly exercising. Exercise in itself has been shown to lower stress, improve one's sleep, and improve your self-esteem. Exercising will also increase your energy level and make you more likely to be socialize with others since you will have more energy and feel better about oneself in general Second, I would if you aren't, join ... Read More » What are some questions about C that only expert C programmers can answer? Barry Rountree, Computer Scientist, LLNL 186 votes Update: I'm curious to see who here can solve these kind of problems, so I'm offering credit bounties for solutions. If you think you have an answer leave your solution in the comments. If you're the first to solve a particular problem and I like your solution I'll gift you indicated number of credits. Silly solutions are encouraged but won't be awarded anything more than style points.  1... Read More » How do I make more money as a full time PhD student? Rishabh Jain, MIT PhD, 2 x Entrepreneur, Indian / American 49 votes Do what you want to do. Dont ask permission! I know this may sound confrontational to some. Doesnt matter. Figure out a way to make the money you want to, and do it. A PhD is NOT handing over control of your life - that is something we as a society have unambiguously decided is bad. Dont let anyone tell you you cant do something. The 'nice' way people will put this is to say they are 'reform... Read More » Is it ok to be a C++ developer? Sergey Zubkov, C++ programmer (using boost and C++14) 155 votes Answering your comment about there being being "less openings" for C++ developers, and them being hard to find. C++ developers are hard to find. I've been interviewing candidates once a week or more for the past three years, across two jobs, and most people who apply are clueless beginners or Java users who can't even explain how their own GC works. On the flip side, I've been bombarded by rec... Read More » What's a nice little cheat-sheet on mindfulness meditation? Ho-Sheng Hsiao, Adventurer 227 votes What I described here is how to get to the first jhana, the first concentration state. This isn't exactly mindfulness, but it is a requisite training for mindfulness. It's also called "access concentration" or "zone." The advanced states gets weirder and weirder, and you run into risks. The first one is probably good enough for people who want to be better at what they do. The instructions are... Read More »