History What do you prefer - road to reality or brief history of time ?

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The discussion centers on a comparison between the popular science books of Stephen Hawking and Roger Penrose, with a preference for Penrose due to his use of mathematics, which is believed to provide a clearer understanding of complex concepts. Penrose's book "The Road to Reality" is highlighted for its mathematical rigor and inclusion of exercises, although it is noted that readers may need supplementary resources to fully grasp the material, especially if they are unfamiliar with advanced topics like manifolds. The recommendation is made to seek additional exercises online to enhance comprehension of the book's content.
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I mean to say whose popular sci-books do you like more Stephen Hawking's or Roger Penrose 's ?


I like Penrose as he doesn't shy from using mathematics. So he is likely to present a better picture to the general public. And that may even ignite their interest in mathematics.

Also he states clearly where he is expressing his own views. And what's more there are exercises in his book too.
 
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I like the "Road to Reality". Great book.

Thanks
Matt
 
I am reading Penrose's Road to Reality now. Whilst I do like the fact that, as you say, he doesn't shy away from bringing up all kinds of mathematics, if you've never encountered things like manifolds before, it's virtually impossible to get by reading only the book itself. You'll need to visit Wikipedia a fair amount and do some other research and practice problems. Penrose's book does have problems in it as footnotes, but there generally aren't many for each topic and I would therefore suggest finding rigorous exercises for that particular topic (e.g. Fourier series) online and doing them. It can make a lot of what he says easier to digest.
 
Historian seeks recognition for first English king https://www.bbc.com/news/articles/c9d07w50e15o Somewhere I have a list of Anglo-Saxon, Wessex and English kings. Well there is nothing new there. Parts of Britain experienced tribal rivalries/conflicts as well as invasions by the Romans, Vikings/Norsemen, Angles, Saxons and Jutes, then Normans, and various monarchs/emperors declared war on other monarchs/emperors. Seems that behavior has not ceased.
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