I have 5-1/4" floppies the early 80's that still read fine. I wonder if 3.5" floppies from 1995 would still work. I have a feeling the media was made more robus

I have 5-1/4" floppies the early 80's that still read fine. I wonder if 3.5" floppies from 1995 would still work. I have a feeling the media was made more robustly in the early 80's because the sensors weren't that precise, so bits were written with way more field than they needed. Maybe in the 90's when so many bits were crammed on to the 3.5" that they weren't written as strong? Perhaps the same is true of optical media. Are higher density optical disks from later in the era less robust than earlier tech. Like the way Hobart mixers from the early 1900's are built like tanks and can outlast ones built today to save money.