Life Guidelines... another step

Welcome aboard...I've decided that instead of imposing my, may I say, personalized view of various impediments of the world, on all of my Facebook friends and acquaintances, I'd open a blog and anyone who wants to bother, well here it is. Once before I opined on certain rules of life mainly 1) if something is broken and can't be fixed with a hammer its not worth fixing and the follow-up 2) if somethings not broken don't fix it. Now it would seem to go without saying that these are quite obvious, but as we all know sometimes the obvious, and lets say simple, is sometimes well just too obvious and simple. An example you say, hmmm...well for 1) how about the U.S. tax code, now I won't say that it was ever perfect,  but back about forty or so years ago there were different rates based on income and the same with deductions. Never ideal but the little guy had a fighting chance and the people on top seemed to pay proportionally, nobody ever likes paying taxes, but the game was played and the government seemed to have enough. Along came the seemingly sainted Reagan and then Bush I. The code had to be changed, why you say, too hard to figure out and too many loopholes, so the bright lights that guide our ship of state decided they knew better and lowered the highest rates and eliminated some deductions (the ones that I miss most were interest on credit cards and sales tax). Then Bush II showed up and ...man I shudder just remembering his time...more changes, well the idea is, if you're going to fix the tax plan that funds the good old U.S. of A. get out the hammer smash it and try something different, maybe the Fair Tax I don't know, maybe they should have left it alone. As for 2) how about Coca Cola with their new formula, how'd that work out?
Enough on 1) and 2), lets move on, 3) would seem logical , but hey, that's not why we're here. I read various inputs and comments around the web and in the papers and after a bit I must stand up (metaphorically) and exclaim..."Will you people grow a brain!" I mean come on. Lets do a little paraphrasing, first Mark Twain-
"Tis better to remain silent and let the world think you a fool, than to speak and remove all doubt" or something like that and now one of my favorites, something I call bi-lingual strategy, with apologies to Rene Descartes,
"Cognito ergo Jn'est sais pas"(trans,- I think therefore I don't know, pardon my French). If you say "I think" what you're not saying is "I know". So, ergo. what this all leads up to is something I'd always numbered a little higher, maybe 4) or 5), if you don't know about a subject and someone asks you about it, can you just say "I don"t know", how much wasted breath and energy gets spent by people rambling on about issues that they "think" they comprehend more clearly than all of the rest of us. I know I know, opinions matter to those expressing them, and everybody is entitled to them and, this is very important, there are NO wrong opinions, but please remember, it is only your opinion, everybody else's is just as valid. Would you respect a politician more or less for saying "I really don"t know " especially if followed by "Let me find out and then we'll talk",I know I know it'll never happen but man can you imagine.
 And so in conclusion, always wanted to say that and imagine the cheers that would erupt, it seems that I have opinions and I'm not waiting for someone to ask me what they are, I may just state the obvious, but I hope that once in a while I state the truth.