Eager to hit the entrepreneurial jackpot, two ambitious yuppie engineers (Shane Carruth and David Sullivan) accidentally create a functional time travel machine – and numerous time-space paradoxes – in Shane Carruth’s wearisome Primer. Substituting the giddy fantasy of Back to the Future for grave technological authenticity, the film (written and directed by star Carruth) has its one-dimensional characters spout endless streams of high-tech gibberish as a means of convincing us that the fantastic device was born not of make-believe magic, but rather from practical scientific ingenuity. Shot in grainy DV meant to highlight the action’s realism, the film – as one Slant magazine colleague correctly opined – resembles a stylishly empty television commercial, though the script’s mind-numbing blather is usually about stuff only a studious engineer could comprehend. Unrelentingly boring and bereft of any sense of wonder, Primer envisions time travel as a complicated process that necessitates (among other things) hiding in hotel rooms with the phones unplugged, hanging out in rectangular crates for long periods of time, and acting as if you’re constantly constipated. Me, I’ll take a flying DeLorean and a crazy white-haired scientist any day of the week.