Reasons to be miserable
نویسندگان
چکیده
منابع مشابه
Miserable and strongly miserable impartial games
An impartial game is called (strongly) miserable if its normal and misère versions differ just slightly; more precisely, if some (all) zeros and ones of the Sprague-Grundy (SG) functions swap, while all larger values remain the same. We obtain necessary and sufficient conditions for (strong) miserability and show that NIM, Wythoff’s NIM, and game Euclid are miserable but not strongly miserable,...
متن کاملOn tame, pet, miserable, and strongly miserable impartial games
We consider tame impartial games and develop the Sprague-Grundy theory for misère playing the sum of such games that looks simpler than the classical theory suggested by Conway in 1976, which is based on the concept of genus. An impartial game is called pet if the sets of P-positions of its normal and misère versions are disjoint. We provide several equivalent characterizations and show that th...
متن کاملReasons to be fussy about cultural evolution
This discussion paper responds to two recent articles in Biology and Philosophy that raise similar objections to cultural attraction theory, a research trend in cultural evolution putting special emphasis on the fact that human minds create and transform their culture. Both papers are sympathetic to this idea, yet both also regret a lack of consilience with Boyd, Richerson and Henrich's models ...
متن کاملRight and wrong reasons to be screened.
How would you feel if you found out that your 85-yearold mother (or grandmother, if you prefer) had just undergone a pelvic examination to obtain a routine Pap smear? Perhaps you’d be pleased, believing she was being provided the best possible preventive care for cervical cancer. Maybe you’d be reassured, seeing it as evidence that her doctor still cares about her. Perhaps you’d be angry, viewi...
متن کاملMonozygotic twins: Ten reasons to be different
MZ twins, though arising primarily from a single zygote and considered genetically identical, will not ever be absolutely the same. Post-fertilization events such as chromosomal mosaicism, skewed X-inactivation and imprinting mechanisms, as well as other epigenetic mechanisms are responsible for the putative differences between MZ twins. Numerous discordant MZ twins have been reported in the li...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1999
ISSN: 0028-0836,1476-4687
DOI: 10.1038/19016