Create an illustration featuring a horse and horseman that embodies the concept of homo economicus. the horse is wild and uncontrolled, adorned with symbols of immediate rewards such as coins, fast food, and social media icons. the horseman is dressed in a business suit but looks overwhelmed, clearly unable to rein in the horse. they stand at a fork in the road, one path leading towards a treasure chest overflowing with immediate but shallow gains, and the other towards a mountain peak that symbolizes long-term success and fulfillment. the horse is visibly leaning towards the path of immediate rewards, pulling the horseman along. include a signpost at the fork with labels 'immediate gratification' and 'long-term fulfillment.