throw (one) in at the deep end(redirected from throw him in at the deep end)
throw (one) in at the deep end
To prompt or force one to begin doing something very complex and/or unfamiliar, especially suddenly and without guidance, assistance, or preparation. I had never worked in sales before, but my boss threw me in at the deep end, and I learned quickly. The lecturer likes to throw his students in at the deep end on the first day of class by assigning them to write a 2,000-word essay on one of Shakespeare's plays.