David, like many people in this country (perhaps more than you might at first think), used to suffer from arachnophobia which is defined as an intense and irrational fear of spiders. Of course, even though David knew his fear was totally irrational (he described it as such himself), it didn’t make it any less real for him. As anyone with any phobia will certainly be all too aware, the phobia is irrational but very real and its effects can have quite an impact on the sufferer’s life.