Reitman met with Aykroyd at Art's Delicatessen in Studio City, Los Angeles and explained his concept would be impossible to make. He suggested setting it entirely on Earth would make the extraordinary elements more humorous and if they focused on realism from the beginning then the Marshmallow Man would be more believable by the end. Reitman also wanted to detail the Ghostbusters' origins before starting their business, saying "this was beginning of the 1980s: everyone was going into business." Following the meeting, the pair met Harold Ramis at Burbank Studios. Reitman had worked with him on previous films, and believed he could better execute the tone he intended for the script than Aykroyd. Reitman also felt Ramis should portray a ghostbuster; after he read the script Ramis joined the project immediately.