We are living in Critical times and therefore need to be Critical.

Crit-i-cal

  

1.               inclined to find fault or to judge with severity, often too readily. 

2.               occupied with or skilled in criticism. 

3.               involving skillful judgment as to truth, merit, etc.; judicial: a critical analysis. 

4.               of or pertaining to critics or criticism: critical essays. 

5.               providing textual variants, proposed emendations, etc.: a critical edition of Chaucer. 

6.               pertaining to or of the nature of a crisis: a critical shortage of food. 

7.               of decisive importance with respect to the outcome; crucial: a critical moment. 

8.               of essential importance; indispensable: a critical ingredient. 

9.               Medicine/Medical. Having unstable and abnormal vital signs and other unfavorable indicators.

10.               Physics. 

a.               pertaining to a state, value, or quantity at which one or more properties of a substance or system undergo a change. 

b.               (of fissionable material) having enough mass to sustain a chain reaction.