Scientists put all the facts together about a subject then reach a decision on what is truth. This decision is agreed upon by the majority of specialists in the area and becomes fact that is put forward in books and education. Unfortunately, time sometimes proves these "facts" to be wrong.
Australian researchers using the latest findings have changed their view on the age of Egyptian mummies. The artifacts are now believed to be 1,500 years older than was put forward in the scientific literature.
Mummification began as far back as 3,500BC. The original claim of 2,200BC was wrong. Even in prehistoric tribal times Egyptians embalmed their dead. Evidence from objects on show in Bolton Museum, England, proved the thesis. They were analysed and the shock discovery was made. Chemicals from an old embalming process were identified.
This preservation of mainly the hands and heads of deceased people with high status began before written language was developed. Of course, this belief about language could also be proved wrong in the future.
Science by Ty Buchanan