(Syndicated content from: http://signal-integrity-tips.com/2009/top-10-reasons-not-to-care-about-signal-integrity/)
10. Hey! My chip meets spec. It’s the OEM’s job to design it in right.
9. The speed of light is 670,616,629.4 miles per hours. That’s really really fast.
8. I never had that problem on my last project, and this revision is only 30% faster.
7. The via stubs doesn’t connect to anything. What harm can they do?
6. My PCB vendor specs means I won’t have a problem: “Loss tangent – pretty close to zero. Roughness – almost no roughness. Metal resistivity – are you kidding? Copper’s a real good conductor.”
5. Skin effect? Isn’t that something to do with Photoshop?
4. S-parameters? No thanks. Don’t you have an RLC SPICE model?
3. 10 picoseconds? Listen to me: 10 picoseconds to ten decimal places is 0.0000000000 seconds.
2. If it doesn’t work we can always step up to Rogers’ material.
And the number 1 reason NOT to care about signal integrity is:
1. We’re hoping lower speed products will make a come back!
TGIF. Have a good weekend! 
