Why you cannot collect dew by using a container?

Collecting dew using a container can be ineffective because dew forms through condensation on surfaces rather than collecting in a container. If the container is not designed to promote condensation, such as being insulated or not having a cool surface, it will not capture the moisture effectively. Additionally, dew tends to evaporate quickly as temperatures rise, making it challenging to gather in a meaningful quantity. Therefore, specialized methods, like using a flat, cold surface, are often more effective for dew collection.