OULU, Finland — No one would confuse this frigid corner of northern Finland with Silicon Valley. Notched in low pine forests just 100 miles below the Arctic Circle, Oulu seems more likely to achieve dominance at herding reindeer than at nurturing technology start-ups… But this city has roots as a hub for wireless communications, and keen aspirations in innovation. It also has thousands of skilled engineers in need of work. Many were laid off by Nokia, the Finnish company once synonymous with mobile telephones and more recently at risk of fading into oblivion… Now, the Finnish government is exploring how to change that calculus, initiating an experiment in a form of social welfare: universal basic income. Early next year, the government plans to randomly select roughly 2,000 unemployed people — from white-collar coders to blue-collar construction workers. It will give them benefits automatically, absent bureaucratic hassle and minus penalties for amassing extra income.