You don't need qualifications to be a scientist. At heart, all human beings are scientists. For the whole of the several millions of years of the existence of Homo, except for the last two or three hundred, all we've had to help us to explain the world are our five senses coupled with that mightiest of nature's inventions, the human brain. You go round with your eyes open, you become curious about what you see, and you try to explain it. But here's the rub: you realise that plausible explanations are possible only with evidence. Not witness, hearsay, tradition, the sayings of wise men, edicts, what you read in the Daily Mail, or, worst of all, ancient texts of dubious provenance. Once you realise what the real evidence test is, you're as mighty a scientist as Galileo or Einstein. And that does not require a university degree!