Only as far as we imagine… On a clear night 20,000 years ago a man lay next to the warming fire and gazed upward; he saw a glittering dome that contained the world he lived in. Today when I lounge on my balcony and stare up at a smog-obscured-night-sky, I see an infinite universe, perhaps one of many; a vast nothingness punctuated by millions of insignificant balls of fire with finite life spans, around one of which we spend our precariously short existence. Over the last many thousands of years, we have shattered that domed-roof over our heads and thrown back its limits into the reaches of infinity. And all because we dared to imagine, imagine an infinity, imagine a time even before time. However, our world is only as big as we can imagine. Our discoveries will remain contained within the boundaries of our imagination. If we cannot imagine it, we shall not discover it. The 17 th century philosopher Benedictus Spinoza once said ‘ if a triangle could speak, it would say, in...