I'm not the person you responded to, but survivorship bias is what you were originally responding to -- a claim like "we survived without the baby monitor, so it's unnecessary" falls flat because the people that didn't survive without it aren't here to tell you it would've saved them.
> ...if my siblings an I were brought up just fine in the 80's without being in a "smart onesie", I'm sure we can do just as fine today.
There's no one here to say "I died because my parents didn't realize I stopped breathing". Yes, one can look at statistics, and see how many deaths would be prevented by this device, but the comment didn't do that. It's survivorship bias.
Well, you'd know if your siblings died, but you're right, there's some survivorship bias in the "and I" portion.
The main issues, though, are very small sample sizes and the difficulty of knowing if people really were "just fine" compared to what they would have been otherwise.
