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Preface

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Albert Einstein had two famous quotes.

Two things are infinite: the universe and human stupidity; and I’m not sure

about the universe.

–​ Albert Einstein

I am enough of an artist to draw freely upon my imagination. Imagination is

more important than knowledge. Knowledge is limited. Imagination encircles

the world.

–​ Albert Einstein

This book is to help you discover the world of smart applications through the power

of your limitless imagination.

Let the fun begin!