This line of reasoning is plausible, but none the less open to one serious objection; it is sustained neither by statistics nor by practical experience. Moreover it is not new, for, slightly varied in phraseology, it has been persistently urged against the introduction of every new railroad appliance, and, indeed, was first and most persistently of all urged against the introduction of railroads themselves. Pretty and ingenious in theory, practically it is not feasible!--for more than half a century this formula has been heard. That the automatic electric signal system is complicated, and in many of its parts of most delicate construction, is undeniable. So also is the locomotive. In point of fact the whole railroad organization from beginning to end--from machine-shop to train-movement--is at once so vast and complicated, so delicate in that action which goes on with such velocity and power, that it is small cause for wonder that in the beginning all plain, sensible, practical men scouted it as the fanciful creation of visionaries. They were wholly justified in so doing; and to-day any sane man would of course pronounce the combined safety and rapidity of ordinary railroad movement an utter impossibility, did he not see it going on before his eyes. So it is with each new appliance. It is ever suggested that at last the final result has already been reached. It is but a few years, as will presently be seen, since the Westinghouse brake encountered the old "pretty and ingenious" formula. Going yet a step further, and taking the case of electricity itself, the bold conception of operating an entire line of single track road wholly as respects one half of its train movement by telegraph, and without the use of any time table at all, would once have been condemned as mad. Yet to-day half of the vast freight movement of this continent is carried on in absolute reliance on the telegraph. Nevertheless it is still not uncommon to hear among the class of men who rise to the height of their capacity in themselves being automaton superintendents that they do not believe in deviating from their time tables and printed rules; that, acting under them, the men know or ought to know exactly what to do, and any interference by a train despatcher only relieves them of responsibility, and is more likely to lead to accidents than if they were left alone to grope their own way out.