Hi. I’m Jamie Condliffe. Greetings from London. Here’s a look at the week’s tech news:

Machines are more than ever controlled by software, not humans. Occasionally it goes fatally wrong.

On March 10, 157 people died when an Ethiopian Airlines Boeing 737 Max 8 jet crashed. Five months earlier, another crash of the same model of airplane killed 189 people. There are indications that software intended to prevent the jets from stalling may have played a role in both accidents.

Reporting by The New York Times suggests that the software didn’t receive a detailed review by the Federal Aviation Administration before it entered use: Under new rules, the agency delegated much of the responsibility to Boeing. If the software was at fault, and the problem did slip through the regulatory net, it raises questions about how safety-critical technology is vetted.

Those questions will become more important over the next few years.

A year ago, an Arizona woman was struck and killed by one of Uber’s autonomous cars. The vehicle’s autonomy systems failed to brake, as did the safety driver behind the wheel.

Companies like Uber and Waymo, along with most of the auto industry, expect autonomous cars to proliferate over the next decade. Such advances aren’t limited to cars — they will further automate everything from air travel to food delivery. They are built on technologies, like artificial intelligence, that will make split-second decisions for humans.