I ventured to write this book in English because …
it will be more easily read in poor English,
than in good German by 90% of my intended readers.
— HANS J. STETTER, Analysis of Discretization Methods for
Ordinary Differential Equations (1973)
There is not much I could add to Mr. Stetter’s thought, except, maybe, that the number to quote probably tends more to 99% in this case than to the 90% Mr. Stetter notes. So please pardon those errors in language use that I have not yet been able to fix or even see. Suggestions for corrections and improvements are always welcome.