Roberto Abraham Scaruffi

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How good is the CS department at SJSU? Andy Manoske, Econ, CS (2010) 55 votes It depends on what you make of it. SJSU CS is a ABET-accredited program, which means that the bare minimum coursework you'll get at SJSU is the same you'll get at every ot... Read More » How to evaluate ? David Joyce, Professor of Mathematics at Clark Uni... 44 votes One of the identities discussed in high school algebra is   ... Read More » Where is the new energy research? Ryan Carlyle, BSChE, engineer at an oil company 187 votes Simply put, we have already found all the significant energy sources that can be economically harnessed at our civilization's size scale. Our mastery of physics is much m... Read More » What was it like to be at Brown with Emma Watson? Nicholas Ritter, Brown '10, Product Engineer - Nabsys,... 1.8k votes I agree with Dylan, everyone did a great job at respecting her privacy and treating her like any other Brown student, but that doesn't mean we don't have our stories: I ki... Read More » How can I explain division by 0 to a fourth grader? Jeffrey Goldberg, Geek with a wide variety of interests... 100 votes Step through each of these making sure that the concept of each one is clear before moving to the next. When we say that 12/3 is 4, that means that 3 + 3 + 3 + 3 = 12. We ...  Read More » Who is the wealthiest person who has worked as a fry cook at McDonald's? Garrick Saito, likes food 701 votes Jeff Bezos, whose net worth was estimated by Forbes to be $25.2 billion (as of March 2013), worked at McDonalds. Jeff is the founder and CEO of Amazon.com, in case the nam... Read More » What is the most complex/significant program created by a single programmer? Victor Eijkhout, Mathematician, musician, all-round re... 875 votes Around 1978, Donald Knuth was getting dissatisfied with the quality of computer typesetting. He thought he could solve the problem on his sabbatical. Ok, it took him 8 year... Read More » Who is the Feynman of math? Brian Bi, I'm sorta good at math 181 votes Feynman was already extremely good at math. For example, he placed first in the Putnam competition in 1939, apparently by a wide margin. I think that Feynman could have b... Read More » How does Pinterest use machine learning? Stephanie Rogers, Software Engineer at Pinterest 188 votes Machine learning is used all over our company right now. The Black Ops team uses classification to detect spam content and users (Spam Detection). The discovery team (whic...  Read More » What is the mathematics behind Pauli's exclusion principle? Barak Shoshany, Graduate Student at Perimeter Institu... 35 votes There are already good answers here. I'd like to provide a very simple (and simplistic) mathematical formulation from which the principle immediately "emerges". It's just s... Read More »