I too had no problem reading the article, but I had to step out of 3-4 intrusive 'offer' windows to do so. This suggests that some mighty gnarly cookie-bots are at work.
I suspect that if you clear your cookies, reboot your computer, and re-enter the site, you'll have no problem.
That said, it's crap:
"A trading strategy is random if it requires special market conditions to perform well and when these conditions are not present its performance deteriorates.
In other words, a random strategy does not exploit atemporal structural anomalies in price action but temporal anomalies that appear and disappear as market conditions change. For example, the cross-sectional momentum anomaly has been shown to be structural so far while the time-series momentum anomaly comes and goes depending on market conditions."
For this to be true, markets have to remain in a cloistered, ossified state of constancy -- the very dynamic state of markets -- moved by everything from weather to Tweets to Brexitations, is ignored. Good god, man -- find something else.