Pedant: You can have a purely functional program which is an interpreter for BASIC or COBOL or FORTRAN (at least for batch/non-interactive programs, although it

Pedant: You can have a purely functional program which is an interpreter for BASIC or COBOL or FORTRAN (at least for batch/non-interactive programs, although it may depend on exactly what you mean by “pure”.) Does that mean, since those languages can be correctly interpreted by a purely functional program, that they aren’t “imperative”?