There is a common pattern you see pop up in codebases everywhere that many of us have written: given a set of objects, pick one at random. Every object should have the same chance of being picked. A rather simple … Read more
The radio signal first started broadcasting on February 28, about 12 hours after the United States and Israel began bombing Iran. On a scratchy shortwave signal almost twice a day — in the early morning and early evening on Coordinated … Read more
The random_page_cost was introduced ~25 years ago, and since the very beginning it’s set to 4.0 by default. The storage changed a lot since then, and so did the Postgres code. It’s likely the default does not quite match the … Read more
References [1] Y.-C. Chen and X. Fan, “Biological lasers for biomedical applications,” Adv. Opt. Mater., vol. 7, no. 17, 2019, https://doi.org/10.1002/adom.201900377.Search in Google Scholar [2] R. Bernasconi, G. P. Invernizzi, E. Gallo Stampino, R. Gotti, D. Gatti, and L. Magagnin, … Read more
From the above definition of PRNG, we know that the goal of an RNG is to generate an output that is indistinguishable from truly random. The Decision LWE (DLWE) problem has exactly this property. This is the famous LWE equation … Read more
It’s me again, I’ve wasted more time with the various computers in our basement. I’ve wrote several of these before. As usual, I don’t necessarily claim to be an expert on all of this; I just like to share things … Read more
Physics in high dimensions is becoming the norm in modern dynamics. It is not only that string theory operates in ten dimensions (plus one for time), but virtually every complex dynamical system is described and analyzed within state spaces of … Read more
Why random selection is necessary to create stable meritocratic institutions Campbell’s Law (a variant of Goodhart’s Law) states that the more a metric is used for social decision-making, the more it will be subject to corruption which distorts and corrupts … Read more
A post on Decision Science about a problem of Uri Wilensky‘s has been making the rounds: Imagine a room full of 100 people with 100 dollars each. With every tick of the clock, every person with money gives a dollar … Read more
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