"Summing up, I would suggest that in every case the Tribunal should inquire into the circumstances and ask themselves whether the man or his advisers were at fault in allowing the four weeks to pass by without presenting the complaint. If he was not at fault, nor his advisers — so that he had just cause or excuse for not presenting his complaint within the four weeks — then it was 'not practicable' for him to present it within that time. The Court has then a discretion to allow it to be presented out of time, if it thinks it right to do so. But, if he was at fault, or if his advisers were at fault, in allowing the four weeks to slip by, he must take the consequences. By exercising reasonable diligence, the complaint could and should have been presented in time"