“Glitch” is clearly the word of the moment, after a series of pesky little technical problems forced United Airlines to ground flights, halted New York Stock Exchange trading and took down The Wall Street Journal website homepage all on the same day. If that wasn’t enough technical trouble, Seattle’s 911 system went down briefly. And a couple of NASA spacecraft also suffered “glitches” in recent days.

We deal routinely with glitches these days — a Wi-Fi connection goes down, an app freezes, a plug-in (usually Shockwave) stops responding, an email doesn’t load properly — which may help explain why, aside from lots of grumbling from delayed airline passengers, the reaction to Wednesday’s glitches was rather muted. The NYSE problems were reportedly caused by a “configuration issue” after a software update and United blamed its problem on “degraded network connectivity.” We see those issues every day, just not on as large a scale.

But that’s the problem.

At the risk of sounding like a high school term paper, let us note that the Merriam-Webster definition of glitch is “an unexpected and usually minor problem; especially: a minor problem with a machine or device (such as a computer).” The full definition describes it as a minor problem that causes a temporary setback.

Sure, Wednesday’s setbacks were all temporary. The Wall Street Journal site came back up quickly. Seattle’s 911 service was restored. Action on the NYSE itself was stopped for nearly four hours, but even then traders were still able to buy and sell NYSE-listed stocks on other exchanges. United grounded about 3,500 flights, which meant some people missed a wedding or a crucial business meeting. That will take time to sort out, but it will get sorted out.

In aggregate, though, the problems add up — and the word “glitch” only minimizes what can be much bigger, more serious issues..

Stock exchanges have suffered from a series of stoppage-causing glitches in recent years, pointing to the value of having trading spread across numerous exchanges. United’s tech breakdown “marked the latest in a series of airline delays and cancellations in the last few years that experts blame on massive, interconnected computer systems that lack sufficient staff and financial backing,” the Los Angeles Times reports. Just ask any of the roughly 400,000 United passengers whose travel plans were messed up if this was a little glitch. Or maybe check with the engineers who had to troubleshoot and rebuild the HealthCare.gov site after its glitch-laden launch.

It may be some relief that these latest outages weren’t the result of external attacks, but as sociologist Zeynep Tufecki, an assistant professor at the School of Information at the University of North Carolina, writes at The Message, “The big problem we face isn’t coordinated cyber-terrorism, it’s that software sucks. Software sucks for many reasons, all of which go deep, are entangled, and expensive to fix.”

These foul-ups are now mundane, and to some extent they may be inevitable as we rely more and more on complicated computer systems in every aspect of our lives. That’s the real issue, and it’s a lot bigger than a glitch.