If everything seems to be going well, then something has been overlooked. Nothing can be made foolproof, because fools are so ingenious. A computer can make as many mistakes in two seconds as twenty men working twenty years can make. Life is a series of circumstances beyond your control. The smallest interval of time is that between a traffic light turning green, and the car behind you blowing its horn.
Logic is a systematic method of coming to the wrong conclusion with confidence.
The other line always moves faster. All truth goes through three stages. First, it is ridiculed. Then, it is violently opposed. Finally, it is accepted as self-evident.