The optimist says the glass is half full; the pessimist says it's half empty. What does the engineer say? Answer: why is there twice as much glass as there needs to be?It's hard to escape the techies that surround us, both at work and at home. We wouldn't want to live without them: They're immensely helpful in this high-tech world, but when it comes to social and personal interactions, engineers' skills and training often work against them. "How to...