“Am I not your Rabb”? – Prologue: Part 1

But today’s Muslim have a guideline, an instruction manual, a book from the one who created them. Yet they follow the system other than what their Rabb prescribed for them. Aren’t these ‘Muslim’ living in more (double or squared) than a ‘Jahiliyah’? Aren’t they should be called double or squared of ‘Jahil’?