Trial & Error (company)

Trial & Error Limited (traditional Chinese: 試當真有限公司; simplified Chinese: 试当真有限公司) is a Hong Kong video production company that creates online comedic skits. The group's YouTube channel was started in October 2020 by Neo Yau, Hui Yin and So Chi Ho.

Yau, who had previously had film and television roles, said his motivation for establishing the YouTube channel was anger that the traditional media failed to allow people in his generation to express themselves. He proposed the channel's creation to Hui and So, who had previous experience running YouTube channels. Six months after its establishment, the YouTube channel received almost 200 million views and nearly 200,000 subscribers. Trial & Error accrued the most subscribers of all Hong Kong channels in 2021, having in a little over a year of its founding produced 210 videos and accrued over 350,000 subscribers.

Trial & Error's content is heavily influenced by Stephen Chow's work. The group's videos include game shows, music videos, funny sketches, and parodies of popular songs and movies, through which the channel's founders share their thoughts about interactions with others, workplace politics, and what is currently in vogue. Frequently featuring slapstick, mo lei tau humour, and preposterous practical jokes, its videos are analogies of what it is like to be a Hong Kong resident. The group released several satirical songs by parodying a Dear Jane song and lampooning Mirror. In June 2021, they released "Hai Gum Sin La", which the South China Morning Post's Emily Tsang said alludes to the "inner struggle" that people have over many Hong Kong people moving abroad.