“A dinosaur wonders why it still walks the earth,” U2 sings on “The Blackout.” It’s not the best song on the band’s new album, “Songs of Experience” (Interscope), but it may just be the most revealing.

It’s also an encouraging sign that U2’s latest crisis of faith comes with a dollop of “Jurassic Park” humor, a sendup of its own natural tendency toward bombast and overstatement.

“Songs of Experience” tries to remind listeners that U2 still has a few surprises left to unveil: It’s unusually subtle and low-key at times, it’s frequently self-deprecating, and it has one or two powerful moments that rank with the band’s better music. In sum, it’s kind of a mess, which means it’s a heck of a lot more interesting than its predecessor, the ill-fated 2014 album “Songs of Innocence.”

“Songs of Experience” tries to make amends for “Songs of Innocence” by easing back slightly on the slick pop production that sucked all the character out of the earlier album’s songs. The new album was initially conceived as the “adult” sequel to the childhood memories of “Innocence,” but that plan ran aground as the album churned through nine producers and several revisions. It was finally revamped for the final time after Bono’s mysterious “brush with mortality,” as described by the Edge in a recent interview with Rolling Stone.

The initial impression left by “Experience” is of a more tempered and low-key U2, with Bono delivering some unusually warm and intimate vocals that suggest a man who has indeed faced some sort of personal reckoning. The singer has suggested that several songs were conceived as letters to his wife and children in the aftermath of his near-death experience, and that reflective tone lends a haunted quality to “Love Is All We Have Left.”

In “You’re the Best Thing About Me,” ostensibly one of several love songs on the album that Bono addresses to his wife, the band wrestles with self-doubt over Adam Clayton’s foundation-crashing bass line. Clayton’s bass, long the band’s secret weapon, was largely muted on “Songs of Innocence,” but it resumes its Godzilla-like presence on several “Experience” songs.

Yet the best that can be said about lesser tracks such as “Get Out of Your Own Way” and especially “American Soul” is that Kendrick Lamar’s bleakly humorous reinterpretation of the biblical beatitudes walks away with both of them.

The album toggles between extremes, sandwiching strong songs amid ponderous throwaways. As it winds down, the missteps pile up.

And yet there are also two brash tunes that sound like U2 talking to itself, and by extension its fans, about what it means to be a rock band in 2017. In “The Showman (Little More Better),” Bono suggests that all those we pay for entertainment — including, presumably, the singer in the biggest Irish rock band of all time — shouldn’t be trusted for anything. “I lie for a living, I love to let on,” Bono sings. “But you make it true when you sing along.”

Similarly, “The Blackout” parodies arena rock with its groaning guitars and, yes, another city-stomping contribution from the irreplaceable Clayton. The takeaway: Dinosaurs really aren’t extinct. They’re alive and well and living inside Adam Clayton’s bass.

Greg Kot is a Tribune critic.

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Twitter @gregkot