Science isn't an objective term, unfortunately. There is no single, defining feature outside of our imagination that we can point at and say, 'hey, now it's science!'. Add to that the fact that the word has multiple meanings under different contexts, and you've got yourself a mire of confusion.
To get past this, you need to have a look at the context of the situation, as you would for any claim. Hell, not all research published in a journal is equal. Some journals have weak review panels consisting of people who all share the same biases. Deciding what constitutes science and science research on such a simplistic premise as whether it is in a journal or not is a poor way of thinking critically about information - understanding how the information was produced is far more important.
The challenge has scientific rigor for the following reasons - bias is spread across participants (on one side there are people who view the claim with doubt, while the other participants typically view it with preformed conclusions); the outcome is clearly articulated and made known prior to the experiment; and the data are recorded clearly and accurately, and checked by the party with an invested interest. As far as science goes, this is far more rigorous than a lot of peer reviewed papers that have snuck into journals in recent years.
So, ask your friend what difference it would make putting it into a journal. The process is more transparent, detailed and balanced in terms of bias than a lot of research. As far as I can see, that makes it pretty damn good science.
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