The complexity, in my dumb ass opinion, is that humans tend to look for patterns and correlations when trying to understand things at scale.
e.g., experienced engineers view inexperienced engineers as being in a rush and inversely, inexperienced engineers view seasoned engineers as being slow or reluctant to change.
Regardless of why the above is generally true, it's not true for everyone.
Here's some simple rules of growing old:
1. Don't forget you were once that person. Given them a chance to have the same experiences 2. Remember, most likely you'll grow old one day so grow old mindfully 3. This industry has a cycle. New people come in, make mistakes, experienced people correct it. Repeat forever. 4. As you grow older, some people take on new responsibilities like family. This has a profound impact on your work and social life. 5. Stop being a dick to people young and old, inexperienced and experienced. Try to relate to the past and present the best you can.
Lastly, every old person you see, including the greats, were once happy, highly motivated, inexperienced and passionate people ready to prove themselves! Now they're just older and still have a lot of those traits within them, but it's not often shown to the world.