What type of logical fallacy is involved here?
If once a man indulges himself in murder, very soon he comes to think
little of robbing; and from robbing, he comes next to drinking and
Sabbath-breaking, and from that to incivility and procrastination. Once begin this downward path, you never know where you are to stop.
Many a man has dated his ruin from some murder or other that perhaps he thought little of at the time.
A. Weak Analogy B. Slippery Slope C. Equivocation D. None of the above
Slippery slope-this type is based upon the claim that a controversial type of action will lead inevitably to some admittedly bad type of action. it is the slide from a to z via the intermediate steps b through y that is the slope, and the smallness of each step that makes it slippery.
this type of argument is by no means invariably fallacious, but the strength of the argument is inversely proportional to the number of steps between a and z, and directly proportional to the causal strength of the connections between adjacent steps. if there are many intervening steps, and the causal connections between them are weak, or even unknown, then the resulting argument will be very weak, if not downright fallacious.