Comment Re:Not really new information... (Score 1, Troll) 28
What's changed is that in the early days flash memory was one bit per cell. Now most consumer grade stuff is multi level, so instead of a single threshold voltage that separates a 1 from a 0, there are multiple thresholds that each represent a different binary code.
SSDs sometimes have to re-read blocks with different voltage thresholds to get good data, and make use of error correction on top.
Presumably age related degradation is worse for multi-level flash.