However, can you perform every calculation used in brewing without resorting to brewing software? For example, can you calculate something as fundamental as strike liquor temperature and boiling liquor infusions needed for stepping a mash in a non-heated mash tun without resorting to a textbook or the use of brewing software?
I don't see why I need to. I have the software and my experiences and my notes and that's good enough for me.
Let's not overwhelm a newbie.