Germans expect claims to be backed by evidence. If you make an assertion, be prepared to support it. The more significant your claim, the more substantial your evidence should be. “What’s your source?” is a natural question, and you should have an answer.
Documentation matters—arguments that can point to data, research, verifiable facts, and credible sources are stronger than those that rely on unsupported assertion. Before making your case, gather your evidence. Include data in presentations. Reference sources in proposals.
When you cannot document a claim, acknowledge that uncertainty. German audiences give weight to well-evidenced arguments and are skeptical of claims that cannot be supported. Doing the homework to document your case is part of the work of persuasion.
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