> How do you manage errors? It becomes unwieldy like every other language. > What happens if Questionnaire.xlsx or Sheet1 doesn't exist ? Runtime exception.

> How do you manage errors? It becomes unwieldy like every other language. > What happens if Questionnaire.xlsx or Sheet1 doesn't exist ? Runtime exception. I've seen too much Clojure code (and this goes for every language where error handling is optional - Hi Javascript!) just skip error handling and focus on "happy path". And as demonised as Java's checked exceptions are, they at least forced error handling to be thought of.