29th June 2014, 01:51 PM
Marc Berger Wrote:Kevin wouldnt it be better to weed the incompetants out at the earliest opportunity? Your probably wasting your time if they haven't got a decent maths GCSE, something like a A, A*, .
Not much need to be a whizz a 1st order differential equations if you're out in the field. The ability to add and subtract ( using a calculator ) is usually sufficient.