This reminds me of the old joke: " The company computer was broken, and no one could fix it. They call the old repairman, who takes a look, and says he can fi

This reminds me of the old joke: " The company computer was broken, and no one could fix it. They call the old repairman, who takes a look, and says he can fix it for $5K. Desperate, the company says "Anything, just fix it!". The repairman squats down at the main console, opens the hatch, and replaces 1 single bolt holding some boards together. As he closes the hatch, he hears the cheers as the computer starts up, from all but the manager, who says "What? $5K for that?". The repairman silently hands him the bill: 1 Bolt $1 Knowing where to put the bolt: $4,9999 " In a similar vein, knowing which option in which config to change in which way is really the hard part, and changing the wrong one in the wrong way will make it worse. And in every problem I run into, each source, somehow, has a different recommendation, often without explanation as to what the change will do or why. So I see the original author's point, and had an excuse to trot out this old, shopworn joke.