Two events this week seem diametrically opposed. Early in the week reports of panic selling on Wall Street reverberated around the world. DeepSeek had emerged, seemingly out of the blue, and presented the world with what it said was a cheaper way of developing artificial intelligence, with AI models were reported to be just as good as the well-known ChatGPT, but made at a fraction of the cost. Investors in the US computer chipmaker Nvidia dumped the stock, down 17 per cent, and that panic selling infused its way through Wall Street's biggest tech stocks. The Australian share market held…