Tougher

Tesla has reached the threshold Musk once said would be required to achieve “safe unsupervised self-driving,” but the company still faces various hurdles.

Levi’s says efforts to sell more than just jeans are helping to drive “a meaningful inflection in our financial performance.”

“A journey of a thousand miles begins with a single step,” to quote an old Chinese proverb. Like most proverbs with sticking power, its profundity grows with reflection. What looks…