Once in a soap factory in Japan, the soap cover was mistakenly packed without soap in it i.e. empty box. To avoid the it in the future, they purchased an X-Ray machine of 60,000 Dollars to check if soap is Packed in every cover or not, in the assembly line..
Same problem occurred in India
What did they do? They Simply put a Fan beside the Assembly line.
Empty boxes were flown away!
“Jai ho Indian Dimag ki”