I asked What does it mean to say that egg derived vaccines are "cheap but slow to produce"? and it was closed as "Homework questions are off-topic on Biology".
This is not homework, the question is prompted by the quoted Nature News article that was published the same day as I posted the question.
Perhaps I could have provided a reference for my summary of the timeline of eggs production, perhaps the image below from here, I did not because I thought I provided a summary in the text. Is that all that is missing, or is there something fundamentally wrong with the question?