Slippery slope logical fallacy.

The Slippery Slope is a fallacy in which a person asserts that some event must inevitably follow from another without any argument for the inevitability of the event in question. In most cases, there are a series of steps or gradations between one event and the one in question and no reason is given as to why the intervening steps or gradations will simply be bypassed. This "argument" has the following form:

Event X has occurred (or will or might occur).
Therefore event Y will inevitably happen.

[link to www.nizkor.org]

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