For my own part, this book is now a permanent fixture at my desk so I can refresh myself on physics concepts that get discussed in papers that I read.

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"The TSA had never really gotten the kind of traction we needed with our customers, " former TSA Administrator Kip Hawley wrote in his book, " Permanent Emergency: Inside the TSA and the Fight for the Future of American Security, " published in April.

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Taymor's lawsuit sought half of all profits derived from the sale, license, transfer or lease of any rights in the original "Spider-Man" book along with a permanent ban of the use of her name or likeness in connection with a documentary film that was made of the birth of the musical without her written consent.

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This valuation gives it a 0.8 price to economic book value ratio, implying that the market expects a permanent 20% decline in NOPAT for SNDK. In the short term it is possible that SNDK might experience a decline in NOPAT, but over the long term it is hard to imagine this company experiencing the kind of permanent decline that its share price implies.

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Is this slowdown due to a systemic, permanent shift (like the evolution of digital music or the e-book) or is the industry simply mimicking the overall business cycle (after all, job growth is down in many sectors of the economy today)?

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The letters surrounding the ensuing controversy, which eventually led to Toscanini's permanent departure from Italy, form the most absorbing section of the main part of the book.

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That price translates into a price to economic book value ratio of 0.5, which means the market is predicting a permanent 50% decline in its profitability, an awfully pessimistic assumption.

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If you want to know which poker hands to bluff with, why neighbourhoods with permanent residents have more road crossings or why digital communication makes the world spikier not flatter, Mr Harford's book provides some answers.

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