So, a company builds a really successful new kind of fire extinguisher. It revolutionizes the fire extinguisher industry by doing it very successfully, at least as well as it had been done before, mostly better. It changes how everyone thinks about fire extinguishers, except for some old timers who never change their minds about anything.
Then Acme builds a knock-off of this fire extinguisher. (So close that the original company successfully SUES them.) Exactly the same except the grip fits your hand better, and the lever pull is about three times heavier than the original. But the fire suppression publications rave about it, put it on the cover, and tout it as the next new thing. So you, being young and impressionable, believing everything you read in magazines, go and buy one. You figure that this is the newer, better version of the original that you can trust your life to.
Then as you are carrying this fire extinguisher home, The handle breaks off and it falls to the ground. You think to yourself; "That's odd. I must have gotten the one in a million that the factory screwed up. Oh well, I'm sure they will be happy to fix it." And the local repairman rolls his eyes as he puts a new lever on. Then you drive it home, and when you pull it out of your car, the nozzle isn't on it. It broke off on the seat. You drive back to the repairman, who doesn't say anything as he fixes it again. Then you test fire it, and it doesn't work. And something else breaks.
Now, I'll admit, I grew up in southern Utah, so I'm a little bit slow on the uptake, but I THINK, that when you buy a tool to SAVE YOUR LIFE, and everything on it is BREAKING, that's not a tool you can trust. Is the smart move to tell yourself, "Well geez, I've already replaced half of the critical parts, it HAS to work now!" or do you ask yourself; "If everything else broke, how can I trust the REST of it to work?" If this is a tool you are trusting your life to. GET RID OF IT< AND USE THE TOOL THAT SEEMS TO WORKK JUST FINE. Which I did. A LOT. No problems. Is it possible for the original brand of fire extinguisher to have problems? Of course it is. Nothing is going to have a perfect production rate. But there are items that are statistically much more likely to be successful.
As time goes by, I see Acme fire extinguishers, and I have a fire extinguisher that I know works. Is there any reason on this planet I should consider getting another Acme?
So then, years later, I see a guy who is looking to buy an Acme fire extinguisher. I hear him asking the guy behind the counter; "I like the way this feels. How well do they work? I mean, I'm trusting my life to it, I want to know it is good." Should I shut up? Should I LIE and tell them mine was fine? Or should I tell him what happened and let him decide?