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Someone has probably point out to you that the title comes from Robbie Burns' poem "To a Mouse" (If you haven't read it, it's here: http://www.worldburnsclub.com/poems/translations/554.htm ), where...
It's an allusion to a line from the poem "To A Mouse" by Robert Burns: "The best schemes o' mice an' men gang aft agley". This means that the best laid plans of mice and men often go astray. This is...