> Devs need to be careful, and they need to measure things. They shouldn't start with the assumption that something will be slow.
I disagree. The specs of developers' machines typically so far surpass those of users as to make that assumption valid more often than not.
Further, the fail case for incorrectly assuming that a web page will be fast ranges from it being slow to it being unusable, while the fail case for incorrectly assuming that a web page will be slow is that it is slightly more responsive than expected.
> The specs of developers' machines typically so far surpass those of users as to make that assumption valid more often than not.
Billions of people are using computers that are 100 times slower than your machine in different metrics. 100 times less space on hard drive, 100 times slower hard drive, 100 times slower processor, 8-16 times less memory, etc.
But then they probably won't pay you anyway, also if you target them, you have to make compromises that will affect the overall quality.
I disagree. The specs of developers' machines typically so far surpass those of users as to make that assumption valid more often than not.
Further, the fail case for incorrectly assuming that a web page will be fast ranges from it being slow to it being unusable, while the fail case for incorrectly assuming that a web page will be slow is that it is slightly more responsive than expected.