"The thing with 4hr technical assignments is that you're saying no to anyone with kids". - or maybe they're saying "Yes" to someone who works from home and will do it while being paid by their current employer? ;). Which could mean (a) their current employer has mistreated them and "deserves" this to a certain extent, or (b) they'll do the same kind of thing and other naughty things on work time, if they get the job?