In-flight Wi-Fi made possible by sacks of potatoes

Boeing fills its cabins with 20,000 pounds worth of potatoes to simulate the effect of the human body. The potatoes accurately depict how our bodies would reflect and absorb Wi-Fi signals as they travel through the cabin, allowing Boeing to better optimize its equipment as a result. The strange method has also dramatically shortened testing times — what took two weeks before now only takes a matter of hours.