What are advantages of finding identical or replica planet earth and people identical to us ?

1. We can solve our problem of future by mapping and finding replica planet earth in 2050 A.D. or 2100 A.D. .
2. We can do research on our past instead of depending on excavation findings and carbon dating by mapping and finding replica planet earth in 1800 A.D. OR 1600 A.D.
3. We can stop buying foreign goods and services or even defense equipment's or aeroplanes . We can get cheap medicines and future research work in very small or no cost . So it will be patent free world and copyright free world . There are many songs which are not played on our planet because of variations in life style of artists / singer / actor .