They can be beneficial through pollination of many species of plants. While most moths are active at night, the Hummingbird Moth is also active during the day. The Clearwing Moth is often mistaken for a bumblebee due to its color and flight patterns. Its abdomen of yellow and black segments also appear similar to a bumblebee.
Willful blindness (sometimes called ignorance of law, willful ignorance or contrived ignorance or Nelsonian knowledge) is a term used in law to describe a situation in which a person seeks to avoid civil or criminal liability for a wrongful act by intentionally keeping himself or herself unaware of facts that would render him or her liable.
Note that the definition of legal blindness differs from country to country and that the criteria listed above are for the US. Legally blind has nothing to do with the prescription numbers. Legally blind means that your best vision cannot be corrected with glasses or contact lenses any better than 20/200. A normal person with 20/20 vision can see objects clearly that is 200 feet away from him, while the legally blind person can only see the object clearly that is 20 feet away from him.