Mikhail Kalashnikov, the designer of the AK-47, emphasized the importance of appreciating existing designs before creating new weaponry for several reasons:

1. Learning from History: Kalashnikov believed that understanding the strengths and weaknesses of existing weapons can provide valuable insights. By studying past designs, engineers and designers can avoid repeating mistakes and can build upon successful features.

2. Efficiency in Development: Appreciating existing designs can lead to more efficient development processes. Instead of starting from scratch, designers can modify and improve upon proven concepts, saving time and resources.

3. User-Centric Design: Kalashnikov often highlighted the importance of considering the needs of the end-users—soldiers and combatants. By understanding what works well in current designs, new weapons can be tailored to better meet the practical needs of those who will use them.

4. Innovation through Adaptation: Many successful innovations come from adapting existing technologies rather than inventing entirely new ones. Kalashnikov’s own work on the AK-47 was influenced by earlier designs, which he improved upon to create a more reliable and effective weapon.

5. Cultural and Contextual Relevance: Weapons are often designed for specific contexts and cultures. By appreciating existing designs, new weaponry can be developed that is more relevant and effective in the environments where they will be used.

Kalashnikov's perspective underscores a broader principle in engineering and design: that innovation is often built on a foundation of existing knowledge and experience. This approach not only fosters better designs but also respects the legacy of previous work in the field.