Anavex Life Sciences Corp (AVXL)

[falconer66a]

Not so.

Scientists never believe anything is 100% certain,

Actually, most scientists, most of the time, believe that gravity will continue to operate. They are 100% certain of that.

In biology, there is 100% certainty for a host of biochemical operations, from those of cellular replication and respiration, on to the control of those processes by specific nucleotide sequences in DNA. The controlling physics of biochemistry are not random or variable. In a cell, the valence of a carbon atom is four, always. 100% certainty. Thereafter, everything follows.