Reproducibility requires more than just measuring ingredients, however, as other characteristics can greatly change results. Leaven viability, flour moisture content, relative humidity, ambient temperature, and accidents of a home-baker's process (did you get interrupted by a child / work / partner / household exigency during your dough prep or bake) all have pretty sharp impacts on results.

Precise reproducibility requires not just monitoring ingredients, but overall environment, dough response, and more.

Or ... you can roll with it as an amateur (both in the "nonprofessional" and "for the love of it" senses), recognise that every bake is its own experiment, measure what you can, but allow for variation. I've been baking bread for about six years now. Results vary, many look great, and all but a very few taste amazing, even where I go far out of nominal parameters.

Biggest goof to date was omitting salt from a batch. (Salting the finished product ... recovered mostly.) Otherwise I've survived odd assortments of flours, accelerated or extended prooving cycles, high- or low-temperature ovens, different cookware, and more. Bread is just really freaking resilient stuff, and so long as you're not planning on hitting the same spot every time, have fun with it, and learn, in the spirit of TFA.