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Famous Quotations on Complexity in Software Engineering

The key is to acknowledge from the start that you have no idea how this will grow
when you accept that you don't know everything,
you begin to design the system defensively.
—Nicholas Zakas (1974-), creator of the ESLint open source project

The "this" keyword in javascript is so powerful and flexible
that I can't figure out how to get it to work at all.
—Ken Beck (1961-), creator of Extreme Programming

Complexity Kills.
—Miško Hevery, creator of Angular

Complexity kills.
It sucks the life out of developers, it makes products difficult to plan, build and test,
it introduces security challenges
and it causes end-user and administrator frustration.
—Ray Ozzie, former Microsoft CTO (2005-2010)

I have always wished that my computer would be as easy to use as my telephone.
My wish has come true.
I no longer know how to use my telephone.
—Bjarne Stroustrup (1950-), creator of the C++ programming language

The purpose of software engineering is to control complexity, not to create it.
—Dr. Pamela Zave, coauthor of Software Requirements and Design

Such is modern computing;
everything simple is made too complicated because it’s easy to fiddle with;
everything complicated stays complicated because it’s hard to fix.
—Rob Pike (1956-), member on the Go Language team at Google; Unix team at Bell Labs

It is not that uncommon for the cost of an abstraction
to outweigh the benefit it delivers.
Kill one today!
—John Carmack (1970-), lead programmer of Commander Keen, Wolfenstein 3D, Doom, Quake, Rage and their sequels

The computing scientist’s main challenge
is not to get confused by the complexities of his own making.
—Edsger Dijkstra (1930-2002), 1972 Turing Award recipient

Controlling complexity is the essence of computer programming.
—Brian Kernighan, contributer to the development of Unix

When you think you're simplifying
you're usually just transferring the complexity to another place.
—Bill Buxton, principal researcher at Microsoft Research, pioneer in the human-computer interaction field

Increasingly, people seem to misinterpret complexity as sophistication, which is baffling.
The incomprehensible should cause suspicion rather than admiration.
Possibly this trend results from a mistaken belief that using a somewhat mysterious device
confers an aura of power on the user.
—Niklaus Wirth (1934-), Swiss computer scientist, designed several programming languages, including Pascal

Some problems are so complex that you have to be highly intelligent and well informed
just to be undecided about them.
—Laurence J. Peter (1919-1990), formulator of the Peter Principle

Any computer science problem can be solved
by adding another level of isolation.
—Butler Lampson (1943-), pioneer in distributed personal computing

Unix is simple;
It just takes a genius to understand its simplicity.
—Dennis Ritchie (1941-2011), created the C programming language and Unix OS

Debugging time increases as a square of the program’s size.
—Chris Wenham

If any part of a system depends on the internals of another part,
then complexity increases at the square of the size of the system.
—Dan Ingalls

Compositionality is THE way to control complexity.
—Brian Beckman

Most programmers treat threads and processes as a necessary evil;
Elixir developers feel they are an important simplification.
—Bruce Tate

Developers spend time coming up with intricate hierarchies of classes that try to model their problem,
much as Victorian gentleman scientists created taxonomies of butterflies
—Dave Thomas

Simplicity does not precede complexity,
but follows it.
—Alan Perlis (1922-1990), first recipient of the ACM Turing Award

I would not give a fig for the simplicity on this side of complexity,
but I would give my life for the simplicity on the other side of complexity.
— Oliver Wendell Holmes

Any intelligent fool can make things bigger, more complex, and more violent.
It takes a touch of genius, and a lot of courage, to move in the opposite direction.
—Albert Einstein

Oh, what a tangled web we weave.
—Sir Walter Scott

Top comments (1)

sohale profile image
Sohail Siadat

Some of these quotations I had read but lost them, and have been searching for a long time but could not find them back. Now they are all on one place. Great curation.