I've seen some comments implying there's "whizz kids who basically 'get it' from the start" and, while anything's possible, I find it pretty hard to believe that their skill/products are genuinely reflective of **overall** skill but that they simply did well with some specimen (IE if they'd had a different situation - even something as simple as not realizing the pH of their tap was so far off it needed correction - then their seemingly-skilled results wouldn't be so skilled looking anymore)