What is lewis overall purpose in this speech?

The central idea of his speech is to say that success does not always take hard work, but also a little bit of luck. He talks about his experience about getting lucky to get ivited at that specific dinner. I think he choose this to say that what the real world is all about,  and that people honestly just get lucky. He shares his personal experience at the beginning of his speech.

terrestrial level - terrene position

potentially - possible/likely

dangerous tasks - treacherous assignment

specifically - exactly/precisely

disabilities - impairment/ailment

to boost - push/lift/raise

artificial intelligence - robot/ ai/machine

enemies - terrorist/opponent/competitor

scientific endeavors - experimental intent

valuable - expensive/priceless

result - outcome/product

hope this !

~just a girl in love with shawn mendes

1 - shakespeare

2 - stephen king

3 - stephenie meyer

4 - seiichi morimura

5 - sabrina elkins

6 - sally cheney

7 - samantha hunter

8 - shelley bates

9 - sue civil-brown

10 - sylvie kurtz