Hugh Dancy and Mayer worked together for a month before filming began to develop Adam's character, and in preparation for his role, Dancy spoke with individuals affected by Asperger's about their feelings, sensory issues and interests.
Hugh Dancy dan Mayer bekerja bersama selama satu bulan sebelum proses produksi dimulai, sambil mengeksplorasi karakter Adam, dan dalam persiapan menjalani perannya, Dancy berbicara dengan penderita sindrom itu, berusaha mengetahui perasaannya, menganalisis masalah sensorik, dan ketertarikan.