[0.15.1] Click tech cost items to open unlocking tech

[folk]

In the tech window now there are lots and lots of science packs that I don't understand.
It was the same thing when I first played factorio, even if there were only 4, it still took me more time than I like to admit to "get it".

I instinctively click the icons to try and find out how to make them.
Especially now that they look like buttons.

So, why not make it so.
Thank you.

[ssilk]

For me it locks unfinished - as you already saw. I expect an update here.