I'm looking for a word or phrase to describe the following thought. While analysing someone else's writing I found that their arguments had some problem. For example let's say someone argues that a particular house has slippery floor. So all houses all over the world, that has the same floor-tiles are also slippery. So most household accidents all over the globe happens because of this particular brand of floor tiles.
Although the example I mentioned is extreme, but I want to know how should I explain this. The phrase that comes to my mind is The writer made some "leaps" in argument But I'm told this might not be right. Is it right? The writer has "significant discrepancies" also doesn't clearly espress my thought. He has discrepancy that's okay. But what I want to mean is that, he's jumping from a narrow point of argument and drawing conclusion on a much broader scale. So how should I express this? And Thank you for reeading this.