Comparisons are fascinating and revealing, and the following photos illustrate this perfectly.
Objects show wear and tear over time - there's no mystery about that! However, when we compare them we can really appreciate the striking difference between an old and a new version.
Here are 17 before and after photos that illustrate the impact of time on objects (and a much-loved pet!).
1. A mail carrier's new cap vs one they wore for 5 years

© SpriorNos / Reddit
2. The difference after it was watered

© ciaraturnerart / Twitter
3. A very used LEGO keyring

© purndou / Reddit
4. Water means life

© Remnarc / Reddit
5. A graffiti-free bamboo stalk

© watercatte / Reddit
6. The difference between 5 weeks as the season changes

© low_bwaaa / Reddit
7. Time to replace the doormat!

© bananabeanbonbon / Reddit
8. From romantic sunset to snowy morning

© Rare4m / Reddit
9. Look how grubby phone protectors can get!

© catemily27 / Reddit
10. A second later, from a different angle

© megcooks / Reddit
11. From grimey and broken to pristine and intact

© mell0_jell0 / Reddit
12. This only took a week or so

© Unknown author / Imgur
13. Farm-fresh vs supermarket-fresh

© Unknown author / Imgur
14. And it still loves crawling around his face!

© Princess_34 / Reddit
15. New vs old skateboard wheel

© nick1341 / Reddit
16. When you take time to perfect your modeling skills!

© RockGamingReal / Reddit
17. After years of cuddles!

© SpaghettiSplinters / Reddit