1. Imagine a normal calculator except that it displays A for 0, B for 1, up to J for 9. So the…

1. Imagine a normal calculator except that
it displays A for 0, B for 1, up to J for 9. So the number 372 would appear as
DHC. Does this affect the formal transparency of the calculator? Should it?

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2. To some extent undo is similar to the
‘back’ command or button found in many web browsers, help systems and hypertext
systems. Is the ‘back’ button on a browser just like undo?