Interesting development on writing credits for the screenplay Beautiful Boy posted by Amazone I’ve just noticed noticed.
This version of Beautiful Boy posted on the 29th has it credited as: Screenplay by Luke Davies & Felix van Groeningen, however this more recent version posted three days later has Screenplay by Luke Davies and Felix van Groeningen (emphasis added).
In the case of the WGA screenwriting credit system, an ampersand, “&” means that two writers wrote as a team. WGA considers them to be one person. However, “and” means that two writers worked on the script at different times.