Tech: Sam Altman back after sacking debacle, Optus CEO quits

Technology correspondent Peter Griffin looks at the debacle over the firing of Sam Altman as OpenAI's CEO. The non-profit is behind the hugely successful AI ChatGPT, but Altman was sacked by the board last week for failing to be "consistently candid in his communications". It prompted a revolt by staff - and now he's going back. And in another departure, the chief executive of Australian telco Optus has resigned after a nationwide outage this month left almost half of Australia disconnected.