- I think your variable "i" is messed up.  Why is it 577, when s=1?
- Changed the "Subjects" directory to "Sequences", so we can have
"Data" on the same level.
- Why do the number of faces/places not match exactly?  i.e. I'm seeing
289 faces, 288 places in this particular sequence
- Gender needs to be balanced, I'm seeing 175 males, 114 females.
Create a huge vector with n being the number of trials, half male flags
half female flags.  Mix this vector, and then pull in order as you
assign images.