I don't think it needs an 'internal clock'. It needs two things. (1) the timer tool, (2) to know not to lie about having a tool or using a tool. I think (2) is

I don't think it needs an 'internal clock'. It needs two things. (1) the timer tool, (2) to know not to lie about having a tool or using a tool. I think (2) is the hard thing.