Emetophobia in which the phobic person will go to great lengths to avoid even potential situations that could even be perceived as "threatening". Emetophobia is clinically considered an "elusive predicament" because limited research has been done pertaining to it. The fear of vomiting receives little attention compared with other irrational fears. Frank M. Dattilio. "Emetic Exposure and Desensitization Procedures in the Reduction of Nausea and a Fear of Emesis." "Clinical Case Studies" 2.3 (2003): 199-210.</ref> The event of vomiting may make anyone with this peculiar phobia flee the scene. Some may fear someone throwing up, while others may fear themselves throwing
Complexity function applicable, which may be taken to be uniformly recurrent or even uniquely ergodic. For "x" a real number and "b" an integer ≥ 2 then the complexity function of "x" in base "b" is the complexity function "p"("x","b","n") of the sequence of digits of "x" written in base "b". If "x" is an irrational number then "p"("x","b","n") ≥ "n"+1; if "x" is rational then "p"("x","b","n") ≤ "C" for some constant "C" depending on "x" and "b". It is conjectured that for algebraic irrational "x" the complexity is "b" (which would follow if all such numbers were normal) but all that