Why stack and heap grows in opposite direction?

Related questions

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2. What is the advantage of the heap over a stack?
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6. How do I open a minidump file?
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Tags

1. #prevents
2. #first
3. #answers
4. #sense
5. #grows
6. #freely
7. #space
8. #opposite
9. #sides
10. #available
11. #allows
12. #overlap
13. #upwards
14. #enough
15. #stack
16. #address
17. #platform
18. #bottom
19. #architectures
20. #allocated
21. #areas
22. #dependent
23. #makes