https://blog.bugsnag.com/bug-day-ariane-5-disaster/
Read the link above and consider the following questions for your post.
1. Do you see the importance of choosing the right variable type for a range of values ?
2. Should there have been a way to test this without risking the hardware?
3. Since the code worked well on previous missions, is it fair to blame the developers when the code was used on a faster rocket?
4. What other thoughts do you have about this incident.