She puts her groceries out. Hands clerk a stack of coupons. Oh no, there's a problem with a coupon, do you have your newspaper mailer I can look through. Oh, there it is, yes, can you scan that one instead? Great. Oh this one too. 45 minutes later the clerk says, "$57.83". Mexican is confused. What? "$57.83" Oh, waking up. Shocked. Startled. You can see the wheels turning in her brain: "I'm suppose to do something now". Huge purse finally comes off shoulder. She opens it. Digging. Digging. More digging. Oh, here it is. Giant wallet comes out. Where is it? I know it's in here somewhere. There it is. Got it. Hands the clerk her welfare debit card and finally, finally leaves. What was so fascinating about this experience was observing her having absolutely no awareness that this pending transaction would eventually evolve to where a payment from her would be required. No anticipation. No concept that perhaps she should have her wallet and method of payment out prior to the clerk asking their strange and mysterious request.