The TRS 80 Model 100 is regularly called "the first laptop". You'd disagree with that. Where's the line? Is a CHIP or M5 Cardputer portable or laptop? Is it t

The TRS 80 Model 100 is regularly called "the first laptop". You'd disagree with that. Where's the line? Is a CHIP or M5 Cardputer portable or laptop? Is it the hinge needed? In which case is a folding phone, a phone, laptop, or tablet? (Not meaning to be aggressive. Curious about the fuzzy definition. Wanting to be convinced.)