vix.ing · top · new · best · stats · spec

Thou shalt not say "at random" in vain: Bertrand's paradox exposed

2018/10/14 by Nicola Cufaro Petroni, Petroni, Nicola Cufaro
Mathematics · #60-01 #60A05 #60E05 #FOS: Mathematics #History and Overview (math.HO) #Probability (math.PR) #math.HO #math.PR #msc:60-01 #msc:60A05 #msc:60E05

paper · pdf · doi:10.48550/arxiv.1810.07805

17 pages, 4 figures. Added: Appendix A; References 7, 8, 10; Modified: Abstract; Section 4; a few sentences elsewhere

arxiv created 2019/08/22 · arxiv updated 2019/08/23

Abstract

We review the well known Bertrand paradoxes, and we first maintain that they do not point to any probabilistic inconsistency, but rather to the risks incurred with a careless use of the locution "at random". We claim then that these paradoxes spring up also in the discussion of the celebrated Buffon's needle problem, and that they are essentially related to the definition of (geometrical) probabilities on "uncountably" infinite sets. A few empirical remarks are finally added to underline the difference between "passive" and "active" randomness, and the prospects of any experimental decision

Related