2 ms·
The little rocks work if you're moving nicely symmetrical boulders across a hard, flat surface, but I can't see them working on a grassy hill quite as well...
by andreyf 18y ago
The little rocks work if you're moving nicely symmetrical boulders across a hard, flat surface, but I can't see them working on a grassy hill quite as well...
- deleted 18y ago[deleted]
- DougBTX 18y agoThat's the cool thing about science and technology, it only needs one person to see that something can be done to show everyone else.