feel it is that there is still much change to come if laiy down a definition now at the beginning it must be possible to revise it as the science moves on
In this field it is true that there is still much change to come, and if we lay down a definition now, at the beginning, it must be possible to revise it as the science moves on.
field it is that there is still much change to come, if lay down a definition now, at the beginning, it must be possible to revise it as the science moves on.