It is a logical fallacy and it occurs when someone incorrectly asserts that two or more things are equal because they share some characteristics, regardless of the notable differences between them.
For example, saying that cats and dogs are the same type of animal because they're both mammals and have a tail.
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If you’re unsure about whether an equivalence that you’re thinking about is reasonable or not, try to highlight the differences between the things that you’re equating, and ask yourself whether the equivalence still holds.
It happens when there are two or more opposing positions on a certain topic, and you assume that the truth must rest somewhere in the middle. False balance can be a result of a false equivalence when two sides are presented as being equal, and the terms are used interchangeably, even though they are not.
For instance, in a group interview, equal weight is given to the opinions of two opposing interviewees, one of whom is an established expert, and the other a false authority with no valid credentials.
This fallacy involves arguing against a position because you think the ideas would start a chain reaction of bad things, even though you don't have evidence to support your claim.
Common phrase: "If we do that, then what's next?"