Update README.md

xtaci · May 12, 2021 · 77b4e8e · 77b4e8e
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diff --git a/README.md b/README.md
@@ -42,7 +42,7 @@ Common Storage Lifetime Table:
 
 | Storage | LifeTime | Cold storage|
 |------|------|------|
-|Magneto Optical Disk| 50 years | Yes |
+|Magneto Optical Disk| estimated 50 years | Yes |
 |DVD-RAM|estimated 30 years| Yes |
 |Floppy disk | 10-20 years | Yes |
 |Flash(SD Card/USB Thumb/SSD)|5-10 years or more (depends on write cycles)| Yes |