This may come as a shock to some of you, but… I'm a geek! Geeks are marked by a natural inclination for complex, involved toys and expensive, solitary hobbies. But in between building the ultimate gaming PC or tinkering with Arduino kits to make custom Christmas light patterns, there's one hallmark geek toy that doesn't get brought up much.  I'm talking, of course, about Lego. Sure, we all remember the canonical brick building toy from our childhoods. Back when Legos just came in a loose bucket of bricks and you had to supply the imagination yourself, those were the pioneer days that sorted the true engineers from the chaff.        In recent decades, Lego has abandoned free-form bulk block sets to focus on unique sets intended to build one specific model and only that model. To those of us from Generation X and previous, when we could be trusted to have these foreign thoughts called "ideas" and "inspiration," this new standard for Legos sounds like a fun-spoiler.  But when The Lego Movie (2014)…