Motorcycle actually, and yes I do, and your assumption is based on what? Me leaving the work I cannot do, or I’m not paid to do, to someone who is more capable, and is actually paid to do so?

I’d rather be safe with something that has been done by someone with the experience doing it, rather than leaving it to someone with no experience on the field.

If you are the kind that would rather do it by himself , good for you, I do what I can and it’s worth my time by myself, eg: my home and motorcycle work. However if I don’t have the tools or the knowledge for what I’ll be doing to my bike, I’ll take it to the dealership or the shop. I’m not putting my own safety above my ego.

If I don’t have the knowledge and I don’t want it/need it, why would I want it at all? Knowledge is powerful when in the right hands, however, in the wrong hands it’s just as wasteful as not even having it, cause all I will cause it’s confusion.

I live by a saying, if I can’t explain it to a 5 year old, I don’t understand it fully myself.

About the excel thing, my knowledge is based on a MBA, so I know most of the financial stuff, and I know engineers use it for totally different stuff, and although formulas might be basic, the way they will all be interlinked is not.