[A Friday translation of the 1999 article by one of the authors of the Thief game engine, Sean Barrett]
Unpleasant situation in "Sapper"
In this situation, I know that there are a lot of mines around me, but I can not determine where they are. Several mines can be in one of two places (pink or blue), a group of mines can be located in one of two combinations (light / dark green). In addition, there is still a difficult situation with "5" and "6" in the upper left corner, which I did not single out.

Blue / pink - mutually exclusive pair, light / dark green - mutually exclusive group
"Sapper": logic or probability
In "Sapper" you can play in two ways: as a logical or probabilistic game.

Technically, probability implies logic. If you can logically prove that the mine must be in a certain place, then the probability is 100%. If you can prove that it is not in this place, then the probability is 0%. That is, in a sense, only probabilities are important to us. However, the player uses logical deduction to recognize such 100% situations. Sometimes, especially at low levels of complexity, it is enough to pass a level, no calculation of probabilities is required.

But there are situations when the whole logic of the world can not save you. A simple example is the situation with the "T", which can be seen down the center. It is slightly complicated by additional neighboring mines. (In the simplest case, "2" is replaced by "1", and "5" - by "3", so that the situation is symmetrical.)
KlauS 25 september 2017, 7:07

There are 3 types of lies: Lies, damned lies, and statistics
Statistics, infographics, data analysis and data science – who isn’t doing it right now. Everyone knows how to do it right, just left for someone to write how you SHOULDN’T do it. In the article we’ll try to fix it.

(Hazen Robert "Curve fitting". 1978, Science.)

Article structure:
  1. Lead
  2. Sampling Bias
  3. Well-chosen average
  4. 10 more failed experiments of which we haven’t written yet
  5. Playing with scale
  6. Selecting 100%
  7. Hiding main numbers
  8. Visual metaphor
  9. Example of qualitative visualization
  10. Conclusion and what to read next
KlauS 30 june 2014, 14:35


This is not a joke, the developers of the service Google Analytics added a new tool to track the traffic of any resource in real-time mode. A new tool has its own name that is Google Analytics Real-Time. The service is available only in the new version of the interface, so if you still use the old one, then change the habits. Of course, if you want to track in the real- time mode.

The developers believe that Google Analytics Real-Time will help the webmasters to track the popularity of various materials on the resources. Previously, the traffic tracking was also possible in the real-time mode, but for that purpose were used the third-party tools and services, for example: whos.amung.us.
KlauS 3 october 2011, 14:50