Yes, but there is advantage to a PDR over Mr Google- the PDR just works, no additional infrastructure needed other than light to read by. Google requires a computer, and power, and an internet connection....

Also, if I know which book something is in, so long as I haven't misplaced the book, my shelves are faster than turning a computer on.
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-IronRaven

When a man dare not speak without malice for fear of giving insult, that is when truth starts to die. Truth is the truest freedom.