How grown up I feel is like a roller coaster ride. The first rental agreement, the first permanent job: both very adult. Despairing about your tax return: not an adult at all. Saying “A cozy New Year’s Eve like this is nice” for the first time: too grown up.

Our author Isolde Sellin also experiences it in such a diffuse way. She never crossed the supposed finish line of growing up. So she set out to find out what this term means. In this week's text, she describes why you may never fully grow up - and why it's sometimes enough to pretend.

I hope you enjoy reading

Tanya Falenczyk, editor of SPIEGEL Start

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Finish line or moment of consequence: How much does turning 18 really change?

Photo: mattjeacock / iStockphoto / Getty Images

Finally grown up! Or not?

Isolde Sellin is 22 years old and has long since grown up. Actually. Because she's still waiting to feel like that. What does the term “adulthood” mean, other than a number?

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Student Mebs: “Bonn is colorful, diverse and full of life”

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Why it's good to study in Bonn:

Bonn is no longer the federal capital - but the university town on the Rhine now attracts with many pubs, the annual cherry blossoms and probably the most beautiful café in Germany. At least that's what student Gustav Mebs calls it.

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Cameraman Gruber in Berlin: “Until the director says ‘thank you,’ there is no excuse for canceling a scene.”

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“One wrong camera movement can cost many thousands of euros”:

Alexander Gruber films advertising clips, music videos and series. Here he tells us how he gets new jobs, what he used to compete in the student Oscars - and why regular visits to the gym are part of his job.

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OMR founder Westermeyer

Photo: Benne Ochs

"I'm known for sometimes being late":

Philipp Westermeyer, founder of the OMR Festival, prefers chatting with his team to sitting at his desk. Here he explains why he hasn't ruled out taking a break in the future and shows his calendar.