Comment on YSK Your smoke detectors should be replaced every 7-10 years
grue@lemmy.world 3 weeks agoYour third source is about the 2020 follow-up study of the 2017 study in your first source. You’ve “only” (in scare quotes because that’s still plenty) got three independent sources even though it looks like four.
philpo@feddit.org 3 weeks ago
A follow up is a absolutely regular thing and does not diminish neither study.
grue@lemmy.world 3 weeks ago
I didn’t say they were diminished. I said they weren’t independent.