I haven't yet decided if I should be helpful, or just make fun of this. I have reserved this spot.
Ok; they 'mass' produce this chair and hand the tools to complete the job to the average dimwit. Probably not terribly hard to accomplish this successfully.
Also, the legs are likely made from multiple layers of the same wood, laminated together in a form allowing them to consistently bend the legs and adding strength and resistance to bowing/twisting that would be otherwise more likely to occur from putting this to near your heating duct than attaching the legs. This is not the same as plywood since the grain will all be traveling in the same direction.