Outside$-$in or Inside$-$out? A ski shop owner considers adding surfboards to his r$$nge of product offerings in order to increase his cash flows during the summer months, when his sales tend to be very low. Surfing products would definitely even out his monthly sales. However, after a careful look at the opportunity, he recognizes that selling surfing equipment would require knowledge and skills that are far outside his core competencies, since neither he $($nor his current sales staff$)$ have any surfing experience.

a$.$ Outside$-$in

b$.$ Inside$-$out