I have trouble with step by step instructions. I am much better when someone provides a conceptual framework about how or why a process is done and lets me work out the specific method of accomplishing the task.
I can't follow a recipe without changing it. One of my aunts sent me a Spanish recipe for a chickpea and spinach stew and I set off to make it. What I ended up with was a lot closer to Indian cuisine than Spanish.
Being a fairly visual person, if I must follow step by step instructions, I seem to do better if they are heavily illustrated.
Maybe alied to this, I am remarkably bad at providing directions to get from one place to another. Almost without fail, I will leave out some critical turn and I suspect I have often sent people into scary parts of town because of this. Luckily I had my iPhone with me the last time someone asked for directions and I could show him where we were and what he needed to do to get to where he was going. But had I tried to describe it without visuals, he probably would have ended up in Nebraska.
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Never let the weeds get higher than the garden,
Always keep a sapphire in your mind.
(Tom Waits "Get Behind the Mule")