Ellivro Thgirw dreamed of building his own flying contraption. He finally came up with a plausible plan and moved into the construction phase staging his machine in a huge parking lot. What he found though was that no matter how fast he flapped the multiple rows of wings, his contraption would not become airborne. He finally had to give up due to a lack of funding.
It wasn't until much later that Ellivro realized what the problem was. He had forgotten to unbolt his flying machine from it's temporary supports. However, by the time he understood his error, the flying machine had been repurposed for use as a source of solar energy.