Iirc, in 2011, I knew the meme "all computer systems can be hacked" and I didn't bother to look into why that did not apply to bitcoin. Excessive reliance on heuristics can be devastating on edge cases. 2013, I was very excited about bitcoin, but was living under the credit of others as a college student with no savings of my own to invest or income, and I recall seeing that the software to make a GPU connect to my MacBook Air Ethernet port might be tricky. Only got in in 2017