Feasibility generator

A feasibility generator was a device invented by Harriet Dodd which had the ability to make impossible things "if not exactly real, then at least more probable".

She used a feasibility generator as the cornerstone of Wonderland and disguised it as a talking dodo. Iris Wildthyme was familiar with the technology and believed that she could use it to repair her Celestial Omnibus after it had been disabled by her Superiors from the Clockworks, stranding her in 1973. She was given the opportunity to take Wonderland's feasibility generator for herself; although she hesitated, as this would destroy Wonderland, Panda made the choice for her, taking the generator and incorporating it into the Bus. This had the effect of Iris and Panda now spreading "impossibility" wherever they went. (AUDIO: Iris Wildthyme and the Land of Wonder)