aircraft design - Why don't Airbus planes have perfectly smooth

From time to time I like to watch a planespotting video and I must say that one tiny detail bothers me a slight bit. Look at this Boeing plane: And at this Airbus: In particular, examine the sect

Airbus' Blended-Wing Maveric Hits the Skies

Aiplane Toys for 2 3 4 5 Year Old Boy Girls - Electric Toy Plane with Flashing Led Lights & Sounds, Bump and Go Toy Airplane Perfect for Toddler Birthday, Airbus A380

Airbus Hunts for Delivery Slots to Win Over Key Boeing Customer

Modern Jetliners: The Airbus A350

Why doesn't Boeing build a fully double-Decker Aircraft?

Not Just 747s and A380s: Here Are All the Double-Decker Passenger Planes - The Points Guy

aircraft design - Why don't the noses have the same de-icing metal surface like that of the wing's leading edge, engines, tail, etc.? - Aviation Stack Exchange

Boom Supersonic unveils Symphony engine for Overture airliner

Inside the new 21-hour flight to Australia with £20,000 suites

Electrical Power Will Change the Look of Aviation, Air & Space Magazine