How do files get corrupted?

Related questions

1. Is there a way to edit PDFs?
2. Can you recover deleted PDF files?
3. Is there a free way to edit a PDF?
4. Do you have to pay to edit a PDF?
5. What are corrupted files?
6. Is there a way to edit a PDF for free?
7. Can I edit PDF online?
8. Can you uncorrupt a file?
9. How do I reopen a closed PDF?

Tags

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2. #computer
3. #possible
4. #delete
5. #cases
6. #times
7. #there
8. #replace
9. #necessary
10. #suddenly
11. #corrupted
12. #files
13. #inoperable
14. #while
15. #saved
16. #become
17. #version
18. #recover
19. #earlier
20. #unusable
21. #several
22. #other