Still survivorship bias. We tend to assume that because they cracked it, anyone like them could've done that in the past. In reality, maybe even the author had

Still survivorship bias. We tend to assume that because they cracked it, anyone like them could've done that in the past. In reality, maybe even the author had a chance of 0.001% to crack it and they just got lucky in choosing the right paths and having the right intuitions. It's the same in many parts of research. You obviously would've had no chance without their expertise but just because a researcher discovers something new does not mean there's no luck involved.