Strategy is the Art
of Embracing
the Unknown

25A0 is unicode for black square and a strategy and research office at the intersection of culture, arts, technology, and design.

We conduct commissioned and self-initiated ventures, partnering with clients from the public and private sector.

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Lothar Hartmann


In science, handcraft and economy, Lothar has acquired a broad range of creative and analytical skills to build and implement custom made solutions.

In his experience, unbiased innovation methods, explorative research and a team spirit that is not fueled by fear but by curiosity, increase the chance to implement sustainable and future-oriented solutions.


On behalf of the federal governments high-tech strategy, he has been involved in communicating and implementing regional climate adaptation strategies within the metropolitan region of Hamburg.

He has set up b2b and b2c product lines for a boutique interior lighting startup company, including the operational backend as well as the digital direct sales channel.

In various innovation, design and consulting contexts, he has worked for clients like the Otto Group, Volkswagen, Bayerische Hausbau, a private Bank based in Vaduz and the Hamburg University of Applied Sciences.

Besides his mother tongue german, he speaks portuguese and italian thanks to several stays abroad and still remembers some french grammar from school.

At 25a0 he helps organisations and networks to explore systemic questions and needs in order to gain insights that have a tangible strategic impact.

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Lothar Hartmann