1. Lack of a Plausible Mechanism: Wegener couldn't convincingly explain *how* continents moved. He proposed that continents plowed through the ocean floor, which was widely rejected. The prevailing theory at the time was that the Earth was solid and rigid.
2. Insufficient Evidence: While Wegener presented evidence like matching coastlines and fossil distribution, it wasn't enough to persuade everyone. He also lacked data from the ocean floor, which would later provide crucial support for his ideas.
3. The "Fixist" Mindset: The scientific community held a strongly "fixist" view, believing the Earth's continents and oceans were static. This was ingrained in geological thought, making it difficult for scientists to accept a radical idea like continental drift.
4. Lack of Collaboration: Wegener was primarily a meteorologist, not a geologist. His lack of expertise in geology and his failure to engage with the geological community hindered the acceptance of his ideas.
5. Misinterpretation of Evidence: Some of the evidence Wegener used was misinterpreted or dismissed. For instance, the presence of glacial deposits in tropical regions was explained by some as evidence of a massive ice age, rather than continental movement.
6. Personal Attack: Some scientists, especially those advocating for alternative theories, criticized Wegener personally, dismissing his ideas as "fanciful" or "unproven."
It took decades and significant advancements in technology (like sonar mapping of the ocean floor and the development of the theory of plate tectonics) for the scientific community to finally embrace the core concepts of continental drift. Wegener's contributions paved the way for this paradigm shift, despite facing significant opposition.
