There are many services we pay for, but don’t quite understand, like plumbing or computer repair. So when the time comes to deal with these things, we can only hope that the company will do the job right.
Similarly, when you take your car for an oil change, all you need is to get your oil changed..nothing more nothing less. But what if the mechanic finds some more things that need to get taken care of, for the sake of your family’s safety? Would you trust that they are telling the truth?