Couldnt Pull Out Porn - Brightlocal News
Since the whole exchange being referenced is in the past, couldn't is the way to go. In terms of being old, you presumably are currently old, so because i'm old now is fine. I think the difference is really in why couldn't you have told as opposed to why couldn't you tell .
In the first case, the first statement is hypothetical (using the conditional mood), so considers a hypothetical situation where the machines would need to work, and weren't going to work without … In these cases, can't have is being used to denote disbelief or incredulity, while couldn't have is being used to denote an impossibility. Can and could are modal verbs, and represent present and preterite …