Stumbled upon actual ancient petroglyphs? That sounds wildly lucky. Most people just find weird rocks and maybe an old coke can. You basically hit the casual archaeology jackpot.

Licensed guys mess up boilers all the time too.

Actually, phone calendars are way less stressful to keep up with. All that color coding just made it harder to find what you needed quickly. Digital stuff lets you focus on the work, not the organizing.

David703's rush to save that minute reminds me of my brother skipping steps on his wood lathe. He'd skip checking the chuck tightness for speed, then act shocked when a bowl blank flew off. The repair bill for his garage wall cost more than a year of saved time. Does that "quick check" mindset explain why his tools keep breaking?

My calendar app shows both my time and the recipient's time for every meeting invite. That visual double-check has saved me from a few close calls, much like @theajohnson's friend needed. It's a simple setting that forces you to see the math.