に言わせれば means "if you ask (someone)", "in (someone's) view", and it introduces an opinion that is that person's own – often a blunt or critical one. It follows a person or a group marked with : is the causative of , so word for word it is "if you let X say it".
、。
If you ask me, that film is boring.
、。
According to my mother, I'm still just a child.
、。
In my boss's view, this project has already failed.
,
and
mean the same; に言わせたら sounds the most conversational. With someone else's opinion, the sentence often ends in
,
or
, which keeps the speaker at a distance from it.
、。
If you ask him, the current education system doesn't work at all.
に言わせれば or によると
reports information from a source, neutrally. に言わせれば gives a person's opinion and stresses that it is theirs, and perhaps not everyone's. A source that has no opinion – the news, a report, the weather forecast – takes によると.
、。
According to the forecast, it will rain tomorrow.
、。
According to my father, the forecast can't be trusted.
- × 天気予報に言わせれば、明日は雨だ → 天気予報によると、明日は雨だそうだ
Lingaku