Help with English essay?

"The richness of human experience would lose something...if there were no limitations to overcome." by Helen Keller. What are examples proving this? Thank you so much. I can't think of any examples. I have just been like staring at what I have for like 15 minutes.


I put your question into google and found this response from a year ago.

Also: some examples would include the improvements in car safety. Cure for polio and smallpox. The discovery of penicillin. Improvements in technology. Solar energy. ......